Update symfony/http-foundation from 3.3 to 3.4

82 files changed, 2417 insertions, 950 deletions

diff --git a/composer.lock b/composer.lock
index 27b4ad167f..8747d7bf1b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -916,29 +916,30 @@
         },
         {
             "name": "symfony/http-foundation",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "5943f0f19817a7e05992d20a90729b0dc93faf36"
+                "reference": "d9625c8abb907e0ca2d7506afd7a719a572c766f"
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-                "reference": "5943f0f19817a7e05992d20a90729b0dc93faf36",
+                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/d9625c8abb907e0ca2d7506afd7a719a572c766f",
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                 "shasum": ""
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             "require": {
                 "php": "^5.5.9|>=7.0.8",
-                "symfony/polyfill-mbstring": "~1.1"
+                "symfony/polyfill-mbstring": "~1.1",
+                "symfony/polyfill-php70": "~1.6"
             },
             "require-dev": {
-                "symfony/expression-language": "~2.8|~3.0"
+                "symfony/expression-language": "~2.8|~3.0|~4.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -965,7 +966,7 @@
             ],
             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-13T18:13:16+00:00"
+            "time": "2017-11-30T14:56:21+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
@@ -1027,6 +1028,65 @@
             "time": "2017-10-11T12:05:26+00:00"
         },
         {
+            "name": "symfony/polyfill-php70",
+            "version": "v1.6.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php70.git",
+                "reference": "0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff"
+            },
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+                "reference": "0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff",
+                "shasum": ""
+            },
+            "require": {
+                "paragonie/random_compat": "~1.0|~2.0",
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.6-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php70\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ],
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2017-10-11T12:05:26+00:00"
+        },
+        {
             "name": "symfony/polyfill-php71",
             "version": "v1.6.0",
             "source": {
@@ -1499,16 +1559,16 @@
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v2.8.2",
+            "version": "v2.8.3",
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                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "b331701944cbe492e466d2b46b2880068803eb08"
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-                "reference": "b331701944cbe492e466d2b46b2880068803eb08",
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@@ -1575,7 +1635,7 @@
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-            "time": "2017-11-19T22:51:25+00:00"
+            "time": "2017-11-26T20:45:16+00:00"
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         {
             "name": "gecko-packages/gecko-php-unit",
@@ -2037,22 +2097,22 @@
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-                "php": ">=5.5",
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+                "php": "^5.6 || ^7.0",
+                "phpdocumentor/reflection-common": "^1.0.0",
+                "phpdocumentor/type-resolver": "^0.4.0",
                 "webmozart/assert": "^1.0"
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             "require-dev": {
@@ -2078,20 +2138,20 @@
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2017-08-08T06:39:58+00:00"
+            "time": "2017-11-10T14:09:06+00:00"
         },
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+            "version": "0.4.0",
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                 "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "fb3933512008d8162b3cdf9e18dba9309b7c3773"
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@@ -2125,20 +2185,20 @@
                     "email": "me@mikevanriel.com"
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-            "time": "2017-06-03T08:32:36+00:00"
+            "time": "2017-07-14T14:27:02+00:00"
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+            "version": "1.7.3",
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@@ -2150,7 +2210,7 @@
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-                "phpunit/phpunit": "^4.8 || ^5.6.5"
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             "extra": {
@@ -2188,7 +2248,7 @@
                 "spy",
                 "stub"
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-            "time": "2017-09-04T11:05:03+00:00"
+            "time": "2017-11-24T13:59:53+00:00"
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@@ -2255,16 +2315,16 @@
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-            "version": "1.4.2",
+            "version": "1.4.5",
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                 "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
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@@ -2298,7 +2358,7 @@
                 "filesystem",
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-            "time": "2016-10-03T07:40:28+00:00"
+            "time": "2017-11-27T13:52:08+00:00"
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             "name": "phpunit/php-text-template",
@@ -2392,16 +2452,16 @@
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             "name": "phpunit/php-token-stream",
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+            "version": "1.4.12",
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                 "type": "git",
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@@ -2437,7 +2497,7 @@
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-            "time": "2017-02-27T10:12:30+00:00"
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@@ -3203,30 +3263,30 @@
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+                "symfony/filesystem": "~2.8|~3.0|~4.0"
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             "require-dev": {
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-                "symfony/finder": "~3.3",
-                "symfony/yaml": "~3.0"
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+                "symfony/finder": "~3.3|~4.0",
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             "suggest": {
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@@ -3234,7 +3294,7 @@
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+                    "dev-master": "3.4-dev"
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@@ -3261,48 +3321,49 @@
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             "homepage": "https://symfony.com",
-            "time": "2017-11-07T14:16:22+00:00"
+            "time": "2017-11-19T20:09:36+00:00"
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-            "version": "v3.3.13",
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+                "symfony/debug": "~2.8|~3.0|~4.0",
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             },
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-                "symfony/process": "~2.8|~3.0"
+                "symfony/config": "~3.3|~4.0",
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+                "symfony/event-dispatcher": "~2.8|~3.0|~4.0",
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@@ -3329,20 +3390,20 @@
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+            "time": "2017-12-02T18:20:11+00:00"
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@@ -3353,12 +3414,12 @@
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@@ -3385,20 +3446,20 @@
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@@ -3409,10 +3470,10 @@
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@@ -3421,7 +3482,7 @@
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@@ -3448,20 +3509,20 @@
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             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-05T15:47:03+00:00"
+            "time": "2017-11-09T14:14:31+00:00"
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                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "77db266766b54db3ee982fe51868328b887ce15c"
+                "reference": "de56eee71e0a128d8c54ccc1909cdefd574bad0f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/77db266766b54db3ee982fe51868328b887ce15c",
-                "reference": "77db266766b54db3ee982fe51868328b887ce15c",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/de56eee71e0a128d8c54ccc1909cdefd574bad0f",
+                "reference": "de56eee71e0a128d8c54ccc1909cdefd574bad0f",
                 "shasum": ""
             },
             "require": {
@@ -3470,7 +3531,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3497,20 +3558,20 @@
             ],
             "description": "Symfony Filesystem Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-07T14:12:55+00:00"
+            "time": "2017-11-19T18:59:05+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "138af5ec075d4b1d1bd19de08c38a34bb2d7d880"
+                "reference": "dac8d7db537bac7ad8143eb11360a8c2231f251a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/138af5ec075d4b1d1bd19de08c38a34bb2d7d880",
-                "reference": "138af5ec075d4b1d1bd19de08c38a34bb2d7d880",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/dac8d7db537bac7ad8143eb11360a8c2231f251a",
+                "reference": "dac8d7db537bac7ad8143eb11360a8c2231f251a",
                 "shasum": ""
             },
             "require": {
@@ -3519,7 +3580,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3546,20 +3607,20 @@
             ],
             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-05T15:47:03+00:00"
+            "time": "2017-11-05T16:10:10+00:00"
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "623d9c210a137205f7e6e98166105625402cbb2f"
+                "reference": "08748edfe6982f4d878cc42b8325b19a276fb1cf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/623d9c210a137205f7e6e98166105625402cbb2f",
-                "reference": "623d9c210a137205f7e6e98166105625402cbb2f",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/08748edfe6982f4d878cc42b8325b19a276fb1cf",
+                "reference": "08748edfe6982f4d878cc42b8325b19a276fb1cf",
                 "shasum": ""
             },
             "require": {
@@ -3568,7 +3629,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3600,79 +3661,20 @@
                 "configuration",
                 "options"
             ],
-            "time": "2017-11-05T15:47:03+00:00"
-        },
-        {
-            "name": "symfony/polyfill-php70",
-            "version": "v1.6.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/polyfill-php70.git",
-                "reference": "0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php70/zipball/0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff",
-                "reference": "0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff",
-                "shasum": ""
-            },
-            "require": {
-                "paragonie/random_compat": "~1.0|~2.0",
-                "php": ">=5.3.3"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.6-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php70\\": ""
-                },
-                "files": [
-                    "bootstrap.php"
-                ],
-                "classmap": [
-                    "Resources/stubs"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Nicolas Grekas",
-                    "email": "p@tchwork.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions",
-            "homepage": "https://symfony.com",
-            "keywords": [
-                "compatibility",
-                "polyfill",
-                "portable",
-                "shim"
-            ],
-            "time": "2017-10-11T12:05:26+00:00"
+            "time": "2017-11-05T16:10:10+00:00"
         },
         {
             "name": "symfony/process",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "a56a3989fb762d7b19a0cf8e7693ee99a6ffb78d"
+                "reference": "db25e810fd5e124085e3777257d0cf4ae533d0ea"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/a56a3989fb762d7b19a0cf8e7693ee99a6ffb78d",
-                "reference": "a56a3989fb762d7b19a0cf8e7693ee99a6ffb78d",
+                "url": "https://api.github.com/repos/symfony/process/zipball/db25e810fd5e124085e3777257d0cf4ae533d0ea",
+                "reference": "db25e810fd5e124085e3777257d0cf4ae533d0ea",
                 "shasum": ""
             },
             "require": {
@@ -3681,7 +3683,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3708,20 +3710,20 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-13T15:31:11+00:00"
+            "time": "2017-11-22T12:18:49+00:00"
         },
         {
             "name": "symfony/stopwatch",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "1e93c3139ef6c799831fe03efd0fb1c7aecb3365"
+                "reference": "52510fe1aefdc1c5d2076ac6030421d387e689d1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/1e93c3139ef6c799831fe03efd0fb1c7aecb3365",
-                "reference": "1e93c3139ef6c799831fe03efd0fb1c7aecb3365",
+                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/52510fe1aefdc1c5d2076ac6030421d387e689d1",
+                "reference": "52510fe1aefdc1c5d2076ac6030421d387e689d1",
                 "shasum": ""
             },
             "require": {
@@ -3730,7 +3732,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3757,20 +3759,20 @@
             ],
             "description": "Symfony Stopwatch Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-10T19:02:53+00:00"
+            "time": "2017-11-07T14:28:09+00:00"
         },
         {
             "name": "symfony/var-dumper",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/var-dumper.git",
-                "reference": "805de6bd6869073e60610df1b14ab7d969c61b01"
+                "reference": "ec650a975a8e04e0c114d35eab732981243db3a2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/805de6bd6869073e60610df1b14ab7d969c61b01",
-                "reference": "805de6bd6869073e60610df1b14ab7d969c61b01",
+                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/ec650a975a8e04e0c114d35eab732981243db3a2",
+                "reference": "ec650a975a8e04e0c114d35eab732981243db3a2",
                 "shasum": ""
             },
             "require": {
@@ -3786,12 +3788,13 @@
             },
             "suggest": {
                 "ext-iconv": "To convert non-UTF-8 strings to UTF-8 (or symfony/polyfill-iconv in case ext-iconv cannot be used).",
+                "ext-intl": "To show region name in time zone dump",
                 "ext-symfony_debug": ""
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3825,27 +3828,30 @@
                 "debug",
                 "dump"
             ],
-            "time": "2017-11-07T14:16:22+00:00"
+            "time": "2017-11-30T14:59:23+00:00"
         },
         {
             "name": "symfony/yaml",
-            "version": "v3.3.13",
+            "version": "v3.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "0938408c4faa518d95230deabb5f595bf0de31b9"
+                "reference": "f6a99b95b338799645fe9f7880d7d4ca1bf79cc1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/0938408c4faa518d95230deabb5f595bf0de31b9",
-                "reference": "0938408c4faa518d95230deabb5f595bf0de31b9",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/f6a99b95b338799645fe9f7880d7d4ca1bf79cc1",
+                "reference": "f6a99b95b338799645fe9f7880d7d4ca1bf79cc1",
                 "shasum": ""
             },
             "require": {
                 "php": "^5.5.9|>=7.0.8"
             },
+            "conflict": {
+                "symfony/console": "<3.4"
+            },
             "require-dev": {
-                "symfony/console": "~2.8|~3.0"
+                "symfony/console": "~3.4|~4.0"
             },
             "suggest": {
                 "symfony/console": "For validating YAML files using the lint command"
@@ -3853,7 +3859,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -3880,7 +3886,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2017-11-10T18:26:04+00:00"
+            "time": "2017-12-04T18:15:22+00:00"
         },
         {
             "name": "webmozart/assert",
diff --git a/vendor/autoload.php b/vendor/autoload.php
index 7acb2df479..9f06b9b91d 100644
--- a/vendor/autoload.php
+++ b/vendor/autoload.php
@@ -4,4 +4,4 @@
 
 require_once __DIR__ . '/composer/autoload_real.php';
 
-return ComposerAutoloaderInit88915787c0ca8762c9a45e08fa8b3022::getLoader();
+return ComposerAutoloaderInit6d3b4e102d83b25f563035091d204a43::getLoader();
diff --git a/vendor/composer/autoload_classmap.php b/vendor/composer/autoload_classmap.php
index 2b89e59e2e..cc01970429 100644
--- a/vendor/composer/autoload_classmap.php
+++ b/vendor/composer/autoload_classmap.php
@@ -6,9 +6,15 @@ $vendorDir = dirname(dirname(__FILE__));
 $baseDir = dirname($vendorDir);
 
 return array(
+    'ArithmeticError' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/ArithmeticError.php',
+    'AssertionError' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/AssertionError.php',
     'Datamatrix' => $vendorDir . '/tecnickcom/tcpdf/include/barcodes/datamatrix.php',
+    'DivisionByZeroError' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/DivisionByZeroError.php',
+    'Error' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/Error.php',
     'PDF417' => $vendorDir . '/tecnickcom/tcpdf/include/barcodes/pdf417.php',
+    'ParseError' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/ParseError.php',
     'QRcode' => $vendorDir . '/tecnickcom/tcpdf/include/barcodes/qrcode.php',
+    'SessionUpdateTimestampHandlerInterface' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/SessionUpdateTimestampHandlerInterface.php',
     'TCPDF' => $vendorDir . '/tecnickcom/tcpdf/tcpdf.php',
     'TCPDF2DBarcode' => $vendorDir . '/tecnickcom/tcpdf/tcpdf_barcodes_2d.php',
     'TCPDFBarcode' => $vendorDir . '/tecnickcom/tcpdf/tcpdf_barcodes_1d.php',
@@ -20,4 +26,5 @@ return array(
     'TCPDF_IMPORT' => $vendorDir . '/tecnickcom/tcpdf/tcpdf_import.php',
     'TCPDF_PARSER' => $vendorDir . '/tecnickcom/tcpdf/tcpdf_parser.php',
     'TCPDF_STATIC' => $vendorDir . '/tecnickcom/tcpdf/include/tcpdf_static.php',
+    'TypeError' => $vendorDir . '/symfony/polyfill-php70/Resources/stubs/TypeError.php',
 );
diff --git a/vendor/composer/autoload_files.php b/vendor/composer/autoload_files.php
index 9414f6fba7..f2bd326290 100644
--- a/vendor/composer/autoload_files.php
+++ b/vendor/composer/autoload_files.php
@@ -7,12 +7,13 @@ $baseDir = dirname($vendorDir);
 
 return array(
     'a0edc8309cc5e1d60e3047b5df6b7052' => $vendorDir . '/guzzlehttp/psr7/src/functions_include.php',
-    'c964ee0ededf28c96ebd9db5099ef910' => $vendorDir . '/guzzlehttp/promises/src/functions_include.php',
     '5255c38a0faeba867671b61dfda6d864' => $vendorDir . '/paragonie/random_compat/lib/random.php',
+    'c964ee0ededf28c96ebd9db5099ef910' => $vendorDir . '/guzzlehttp/promises/src/functions_include.php',
+    '023d27dca8066ef29e6739335ea73bad' => $vendorDir . '/symfony/polyfill-php70/bootstrap.php',
     '0e6d7bf4a5811bfa5cf40c5ccd6fae6a' => $vendorDir . '/symfony/polyfill-mbstring/bootstrap.php',
     'b3134b0e457069f7362d2c9cf91628c7' => $vendorDir . '/fisharebest/ext-calendar/src/shims.php',
-    '2c102faa651ef8ea5874edb585946bce' => $vendorDir . '/swiftmailer/swiftmailer/lib/swift_required.php',
     '37a3dc5111fe8f707ab4c132ef1dbc62' => $vendorDir . '/guzzlehttp/guzzle/src/functions_include.php',
+    '2c102faa651ef8ea5874edb585946bce' => $vendorDir . '/swiftmailer/swiftmailer/lib/swift_required.php',
     'e277be14c90068cf94faed2c43dbe6d8' => $vendorDir . '/symfony/polyfill-php71/bootstrap.php',
     '25072dd6e2470089de65ae7bf11d3109' => $vendorDir . '/symfony/polyfill-php72/bootstrap.php',
     '68a364a398e4c810af7b33b66c1c5a1a' => $baseDir . '/app/Helpers/functions.php',
diff --git a/vendor/composer/autoload_psr4.php b/vendor/composer/autoload_psr4.php
index 87d6580b4f..59daf8ba27 100644
--- a/vendor/composer/autoload_psr4.php
+++ b/vendor/composer/autoload_psr4.php
@@ -9,6 +9,7 @@ return array(
     'Webuni\\CommonMark\\TableExtension\\' => array($vendorDir . '/webuni/commonmark-table-extension/src'),
     'Symfony\\Polyfill\\Php72\\' => array($vendorDir . '/symfony/polyfill-php72'),
     'Symfony\\Polyfill\\Php71\\' => array($vendorDir . '/symfony/polyfill-php71'),
+    'Symfony\\Polyfill\\Php70\\' => array($vendorDir . '/symfony/polyfill-php70'),
     'Symfony\\Polyfill\\Mbstring\\' => array($vendorDir . '/symfony/polyfill-mbstring'),
     'Symfony\\Component\\HttpFoundation\\' => array($vendorDir . '/symfony/http-foundation'),
     'Ramsey\\Uuid\\' => array($vendorDir . '/ramsey/uuid/src'),
diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index 89893db7fc..8a1e4de9e0 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -2,7 +2,7 @@
 
 // autoload_real.php @generated by Composer
 
-class ComposerAutoloaderInit88915787c0ca8762c9a45e08fa8b3022
+class ComposerAutoloaderInit6d3b4e102d83b25f563035091d204a43
 {
     private static $loader;
 
@@ -19,15 +19,15 @@ class ComposerAutoloaderInit88915787c0ca8762c9a45e08fa8b3022
             return self::$loader;
         }
 
-        spl_autoload_register(array('ComposerAutoloaderInit88915787c0ca8762c9a45e08fa8b3022', 'loadClassLoader'), true, true);
+        spl_autoload_register(array('ComposerAutoloaderInit6d3b4e102d83b25f563035091d204a43', 'loadClassLoader'), true, true);
         self::$loader = $loader = new \Composer\Autoload\ClassLoader();
-        spl_autoload_unregister(array('ComposerAutoloaderInit88915787c0ca8762c9a45e08fa8b3022', 'loadClassLoader'));
+        spl_autoload_unregister(array('ComposerAutoloaderInit6d3b4e102d83b25f563035091d204a43', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
         if ($useStaticLoader) {
             require_once __DIR__ . '/autoload_static.php';
 
-            call_user_func(\Composer\Autoload\ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022::getInitializer($loader));
+            call_user_func(\Composer\Autoload\ComposerStaticInit6d3b4e102d83b25f563035091d204a43::getInitializer($loader));
         } else {
             $map = require __DIR__ . '/autoload_namespaces.php';
             foreach ($map as $namespace => $path) {
@@ -48,19 +48,19 @@ class ComposerAutoloaderInit88915787c0ca8762c9a45e08fa8b3022
         $loader->register(true);
 
         if ($useStaticLoader) {
-            $includeFiles = Composer\Autoload\ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022::$files;
+            $includeFiles = Composer\Autoload\ComposerStaticInit6d3b4e102d83b25f563035091d204a43::$files;
         } else {
             $includeFiles = require __DIR__ . '/autoload_files.php';
         }
         foreach ($includeFiles as $fileIdentifier => $file) {
-            composerRequire88915787c0ca8762c9a45e08fa8b3022($fileIdentifier, $file);
+            composerRequire6d3b4e102d83b25f563035091d204a43($fileIdentifier, $file);
         }
 
         return $loader;
     }
 }
 
-function composerRequire88915787c0ca8762c9a45e08fa8b3022($fileIdentifier, $file)
+function composerRequire6d3b4e102d83b25f563035091d204a43($fileIdentifier, $file)
 {
     if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
         require $file;
diff --git a/vendor/composer/autoload_static.php b/vendor/composer/autoload_static.php
index 5a6c040f25..78e227e23d 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -4,16 +4,17 @@
 
 namespace Composer\Autoload;
 
-class ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022
+class ComposerStaticInit6d3b4e102d83b25f563035091d204a43
 {
     public static $files = array (
         'a0edc8309cc5e1d60e3047b5df6b7052' => __DIR__ . '/..' . '/guzzlehttp/psr7/src/functions_include.php',
-        'c964ee0ededf28c96ebd9db5099ef910' => __DIR__ . '/..' . '/guzzlehttp/promises/src/functions_include.php',
         '5255c38a0faeba867671b61dfda6d864' => __DIR__ . '/..' . '/paragonie/random_compat/lib/random.php',
+        'c964ee0ededf28c96ebd9db5099ef910' => __DIR__ . '/..' . '/guzzlehttp/promises/src/functions_include.php',
+        '023d27dca8066ef29e6739335ea73bad' => __DIR__ . '/..' . '/symfony/polyfill-php70/bootstrap.php',
         '0e6d7bf4a5811bfa5cf40c5ccd6fae6a' => __DIR__ . '/..' . '/symfony/polyfill-mbstring/bootstrap.php',
         'b3134b0e457069f7362d2c9cf91628c7' => __DIR__ . '/..' . '/fisharebest/ext-calendar/src/shims.php',
-        '2c102faa651ef8ea5874edb585946bce' => __DIR__ . '/..' . '/swiftmailer/swiftmailer/lib/swift_required.php',
         '37a3dc5111fe8f707ab4c132ef1dbc62' => __DIR__ . '/..' . '/guzzlehttp/guzzle/src/functions_include.php',
+        '2c102faa651ef8ea5874edb585946bce' => __DIR__ . '/..' . '/swiftmailer/swiftmailer/lib/swift_required.php',
         'e277be14c90068cf94faed2c43dbe6d8' => __DIR__ . '/..' . '/symfony/polyfill-php71/bootstrap.php',
         '25072dd6e2470089de65ae7bf11d3109' => __DIR__ . '/..' . '/symfony/polyfill-php72/bootstrap.php',
         '68a364a398e4c810af7b33b66c1c5a1a' => __DIR__ . '/../..' . '/app/Helpers/functions.php',
@@ -28,6 +29,7 @@ class ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022
         array (
             'Symfony\\Polyfill\\Php72\\' => 23,
             'Symfony\\Polyfill\\Php71\\' => 23,
+            'Symfony\\Polyfill\\Php70\\' => 23,
             'Symfony\\Polyfill\\Mbstring\\' => 26,
             'Symfony\\Component\\HttpFoundation\\' => 33,
         ),
@@ -78,6 +80,10 @@ class ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022
         array (
             0 => __DIR__ . '/..' . '/symfony/polyfill-php71',
         ),
+        'Symfony\\Polyfill\\Php70\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/symfony/polyfill-php70',
+        ),
         'Symfony\\Polyfill\\Mbstring\\' => 
         array (
             0 => __DIR__ . '/..' . '/symfony/polyfill-mbstring',
@@ -145,9 +151,15 @@ class ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022
     );
 
     public static $classMap = array (
+        'ArithmeticError' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/ArithmeticError.php',
+        'AssertionError' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/AssertionError.php',
         'Datamatrix' => __DIR__ . '/..' . '/tecnickcom/tcpdf/include/barcodes/datamatrix.php',
+        'DivisionByZeroError' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/DivisionByZeroError.php',
+        'Error' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/Error.php',
         'PDF417' => __DIR__ . '/..' . '/tecnickcom/tcpdf/include/barcodes/pdf417.php',
+        'ParseError' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/ParseError.php',
         'QRcode' => __DIR__ . '/..' . '/tecnickcom/tcpdf/include/barcodes/qrcode.php',
+        'SessionUpdateTimestampHandlerInterface' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/SessionUpdateTimestampHandlerInterface.php',
         'TCPDF' => __DIR__ . '/..' . '/tecnickcom/tcpdf/tcpdf.php',
         'TCPDF2DBarcode' => __DIR__ . '/..' . '/tecnickcom/tcpdf/tcpdf_barcodes_2d.php',
         'TCPDFBarcode' => __DIR__ . '/..' . '/tecnickcom/tcpdf/tcpdf_barcodes_1d.php',
@@ -159,14 +171,15 @@ class ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022
         'TCPDF_IMPORT' => __DIR__ . '/..' . '/tecnickcom/tcpdf/tcpdf_import.php',
         'TCPDF_PARSER' => __DIR__ . '/..' . '/tecnickcom/tcpdf/tcpdf_parser.php',
         'TCPDF_STATIC' => __DIR__ . '/..' . '/tecnickcom/tcpdf/include/tcpdf_static.php',
+        'TypeError' => __DIR__ . '/..' . '/symfony/polyfill-php70/Resources/stubs/TypeError.php',
     );
 
     public static function getInitializer(ClassLoader $loader)
     {
         return \Closure::bind(function () use ($loader) {
-            $loader->prefixLengthsPsr4 = ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022::$prefixLengthsPsr4;
-            $loader->prefixDirsPsr4 = ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022::$prefixDirsPsr4;
-            $loader->classMap = ComposerStaticInit88915787c0ca8762c9a45e08fa8b3022::$classMap;
+            $loader->prefixLengthsPsr4 = ComposerStaticInit6d3b4e102d83b25f563035091d204a43::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInit6d3b4e102d83b25f563035091d204a43::$prefixDirsPsr4;
+            $loader->classMap = ComposerStaticInit6d3b4e102d83b25f563035091d204a43::$classMap;
 
         }, null, ClassLoader::class);
     }
diff --git a/vendor/composer/installed.json b/vendor/composer/installed.json
index 3f014c3bbb..f210441695 100644
--- a/vendor/composer/installed.json
+++ b/vendor/composer/installed.json
@@ -1,5 +1,68 @@
 [
     {
+        "name": "fisharebest/ext-calendar",
+        "version": "2.3.0",
+        "version_normalized": "2.3.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/fisharebest/ext-calendar.git",
+            "reference": "133ddcfbf06373e8655b4af3b1ee3333e6f77b1d"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/fisharebest/ext-calendar/zipball/133ddcfbf06373e8655b4af3b1ee3333e6f77b1d",
+            "reference": "133ddcfbf06373e8655b4af3b1ee3333e6f77b1d",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.3.0"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "<6",
+            "satooshi/php-coveralls": "*"
+        },
+        "time": "2017-05-07T21:22:43+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "files": [
+                "src/shims.php"
+            ],
+            "psr-4": {
+                "Fisharebest\\ExtCalendar\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "GPL-3.0+"
+        ],
+        "authors": [
+            {
+                "name": "Greg Roach",
+                "email": "fisharebest@gmail.com",
+                "role": "Developer"
+            }
+        ],
+        "description": "Implementation of the Arabic (Hijri), French, Gregorian, Jewish, Julian and Persian (Jalali) calendars.  Also provides a replacement for the PHP ext/calendar extension.",
+        "homepage": "https://github.com/fisharebest/ext-calendar",
+        "keywords": [
+            "Jalali",
+            "arabic",
+            "calendar",
+            "ext-calendar",
+            "french",
+            "gregorian",
+            "hebrew",
+            "hijri",
+            "jewish",
+            "julian",
+            "julian day",
+            "julian day number",
+            "persian",
+            "shamsi"
+        ]
+    },
+    {
         "name": "fisharebest/localization",
         "version": "1.10.0",
         "version_normalized": "1.10.0.0",
@@ -56,36 +119,33 @@
         ]
     },
     {
-        "name": "fisharebest/ext-calendar",
-        "version": "2.3.0",
-        "version_normalized": "2.3.0.0",
+        "name": "fisharebest/algorithm",
+        "version": "1.4.0",
+        "version_normalized": "1.4.0.0",
         "source": {
             "type": "git",
-            "url": "https://github.com/fisharebest/ext-calendar.git",
-            "reference": "133ddcfbf06373e8655b4af3b1ee3333e6f77b1d"
+            "url": "https://github.com/fisharebest/algorithm.git",
+            "reference": "e269fd476dc165b40f1cdc99c3051245d56c9380"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/fisharebest/ext-calendar/zipball/133ddcfbf06373e8655b4af3b1ee3333e6f77b1d",
-            "reference": "133ddcfbf06373e8655b4af3b1ee3333e6f77b1d",
+            "url": "https://api.github.com/repos/fisharebest/algorithm/zipball/e269fd476dc165b40f1cdc99c3051245d56c9380",
+            "reference": "e269fd476dc165b40f1cdc99c3051245d56c9380",
             "shasum": ""
         },
         "require": {
             "php": ">=5.3.0"
         },
         "require-dev": {
-            "phpunit/phpunit": "<6",
+            "phpunit/phpunit": "*",
             "satooshi/php-coveralls": "*"
         },
-        "time": "2017-05-07T21:22:43+00:00",
+        "time": "2017-08-21T11:21:58+00:00",
         "type": "library",
         "installation-source": "dist",
         "autoload": {
-            "files": [
-                "src/shims.php"
-            ],
             "psr-4": {
-                "Fisharebest\\ExtCalendar\\": "src/"
+                "Fisharebest\\Algorithm\\": "src/"
             }
         },
         "notification-url": "https://packagist.org/downloads/",
@@ -95,62 +155,54 @@
         "authors": [
             {
                 "name": "Greg Roach",
-                "email": "fisharebest@gmail.com",
+                "email": "greg@subaqua.co.uk",
                 "role": "Developer"
             }
         ],
-        "description": "Implementation of the Arabic (Hijri), French, Gregorian, Jewish, Julian and Persian (Jalali) calendars.  Also provides a replacement for the PHP ext/calendar extension.",
-        "homepage": "https://github.com/fisharebest/ext-calendar",
+        "description": "Implementation of standard algorithms in PHP.",
+        "homepage": "https://github.com/fisharebest/algorithm",
         "keywords": [
-            "Jalali",
-            "arabic",
-            "calendar",
-            "ext-calendar",
-            "french",
-            "gregorian",
-            "hebrew",
-            "hijri",
-            "jewish",
-            "julian",
-            "julian day",
-            "julian day number",
-            "persian",
-            "shamsi"
+            "Algorithm",
+            "diff",
+            "dijkstra",
+            "myers"
         ]
     },
     {
-        "name": "swiftmailer/swiftmailer",
-        "version": "v5.4.8",
-        "version_normalized": "5.4.8.0",
+        "name": "guzzlehttp/promises",
+        "version": "v1.3.1",
+        "version_normalized": "1.3.1.0",
         "source": {
             "type": "git",
-            "url": "https://github.com/swiftmailer/swiftmailer.git",
-            "reference": "9a06dc570a0367850280eefd3f1dc2da45aef517"
+            "url": "https://github.com/guzzle/promises.git",
+            "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/swiftmailer/swiftmailer/zipball/9a06dc570a0367850280eefd3f1dc2da45aef517",
-            "reference": "9a06dc570a0367850280eefd3f1dc2da45aef517",
+            "url": "https://api.github.com/repos/guzzle/promises/zipball/a59da6cf61d80060647ff4d3eb2c03a2bc694646",
+            "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646",
             "shasum": ""
         },
         "require": {
-            "php": ">=5.3.3"
+            "php": ">=5.5.0"
         },
         "require-dev": {
-            "mockery/mockery": "~0.9.1",
-            "symfony/phpunit-bridge": "~3.2"
+            "phpunit/phpunit": "^4.0"
         },
-        "time": "2017-05-01T15:54:03+00:00",
+        "time": "2016-12-20T10:07:11+00:00",
         "type": "library",
         "extra": {
             "branch-alias": {
-                "dev-master": "5.4-dev"
+                "dev-master": "1.4-dev"
             }
         },
         "installation-source": "dist",
         "autoload": {
+            "psr-4": {
+                "GuzzleHttp\\Promise\\": "src/"
+            },
             "files": [
-                "lib/swift_required.php"
+                "src/functions_include.php"
             ]
         },
         "notification-url": "https://packagist.org/downloads/",
@@ -159,19 +211,14 @@
         ],
         "authors": [
             {
-                "name": "Chris Corbyn"
-            },
-            {
-                "name": "Fabien Potencier",
-                "email": "fabien@symfony.com"
+                "name": "Michael Dowling",
+                "email": "mtdowling@gmail.com",
+                "homepage": "https://github.com/mtdowling"
             }
         ],
-        "description": "Swiftmailer, free feature-rich PHP mailer",
-        "homepage": "http://swiftmailer.org",
+        "description": "Guzzle promises library",
         "keywords": [
-            "email",
-            "mail",
-            "mailer"
+            "promise"
         ]
     },
     {
@@ -294,168 +341,48 @@
         ]
     },
     {
-        "name": "league/glide",
-        "version": "1.2.2",
-        "version_normalized": "1.2.2.0",
+        "name": "guzzlehttp/guzzle",
+        "version": "6.3.0",
+        "version_normalized": "6.3.0.0",
         "source": {
             "type": "git",
-            "url": "https://github.com/thephpleague/glide.git",
-            "reference": "8077f529a07ded3eed6c5dcf7f688249b626ddf3"
+            "url": "https://github.com/guzzle/guzzle.git",
+            "reference": "f4db5a78a5ea468d4831de7f0bf9d9415e348699"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/thephpleague/glide/zipball/8077f529a07ded3eed6c5dcf7f688249b626ddf3",
-            "reference": "8077f529a07ded3eed6c5dcf7f688249b626ddf3",
+            "url": "https://api.github.com/repos/guzzle/guzzle/zipball/f4db5a78a5ea468d4831de7f0bf9d9415e348699",
+            "reference": "f4db5a78a5ea468d4831de7f0bf9d9415e348699",
             "shasum": ""
         },
         "require": {
-            "intervention/image": "^2.1",
-            "league/flysystem": "^1.0",
-            "php": "^5.4 | ^7.0",
-            "psr/http-message": "^1.0"
+            "guzzlehttp/promises": "^1.0",
+            "guzzlehttp/psr7": "^1.4",
+            "php": ">=5.5"
         },
         "require-dev": {
-            "mockery/mockery": "~0.9",
-            "phpunit/php-token-stream": "^1.4",
-            "phpunit/phpunit": "~4.4"
-        },
-        "time": "2017-05-09T17:41:49+00:00",
-        "type": "library",
-        "extra": {
-            "branch-alias": {
-                "dev-master": "1.1-dev"
-            }
-        },
-        "installation-source": "dist",
-        "autoload": {
-            "psr-4": {
-                "League\\Glide\\": "src/"
-            }
-        },
-        "notification-url": "https://packagist.org/downloads/",
-        "license": [
-            "MIT"
-        ],
-        "authors": [
-            {
-                "name": "Jonathan Reinink",
-                "email": "jonathan@reinink.ca",
-                "homepage": "http://reinink.ca"
-            }
-        ],
-        "description": "Wonderfully easy on-demand image manipulation library with an HTTP based API.",
-        "homepage": "http://glide.thephpleague.com",
-        "keywords": [
-            "ImageMagick",
-            "editing",
-            "gd",
-            "image",
-            "imagick",
-            "league",
-            "manipulation",
-            "processing"
-        ]
-    },
-    {
-        "name": "tecnickcom/tcpdf",
-        "version": "6.2.13",
-        "version_normalized": "6.2.13.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/tecnickcom/TCPDF.git",
-            "reference": "95c5938aafe4b20df1454dbddb3e5005c0b26f64"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/tecnickcom/TCPDF/zipball/95c5938aafe4b20df1454dbddb3e5005c0b26f64",
-            "reference": "95c5938aafe4b20df1454dbddb3e5005c0b26f64",
-            "shasum": ""
-        },
-        "require": {
-            "php": ">=5.3.0"
-        },
-        "time": "2017-04-26T08:14:48+00:00",
-        "type": "library",
-        "installation-source": "dist",
-        "autoload": {
-            "classmap": [
-                "config",
-                "include",
-                "tcpdf.php",
-                "tcpdf_parser.php",
-                "tcpdf_import.php",
-                "tcpdf_barcodes_1d.php",
-                "tcpdf_barcodes_2d.php",
-                "include/tcpdf_colors.php",
-                "include/tcpdf_filters.php",
-                "include/tcpdf_font_data.php",
-                "include/tcpdf_fonts.php",
-                "include/tcpdf_images.php",
-                "include/tcpdf_static.php",
-                "include/barcodes/datamatrix.php",
-                "include/barcodes/pdf417.php",
-                "include/barcodes/qrcode.php"
-            ]
-        },
-        "notification-url": "https://packagist.org/downloads/",
-        "license": [
-            "LGPLv3"
-        ],
-        "authors": [
-            {
-                "name": "Nicola Asuni",
-                "email": "info@tecnick.com",
-                "homepage": "http://nicolaasuni.tecnick.com"
-            }
-        ],
-        "description": "TCPDF is a PHP class for generating PDF documents and barcodes.",
-        "homepage": "http://www.tcpdf.org/",
-        "keywords": [
-            "PDFD32000-2008",
-            "TCPDF",
-            "barcodes",
-            "datamatrix",
-            "pdf",
-            "pdf417",
-            "qrcode"
-        ]
-    },
-    {
-        "name": "guzzlehttp/promises",
-        "version": "v1.3.1",
-        "version_normalized": "1.3.1.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/guzzle/promises.git",
-            "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/guzzle/promises/zipball/a59da6cf61d80060647ff4d3eb2c03a2bc694646",
-            "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646",
-            "shasum": ""
-        },
-        "require": {
-            "php": ">=5.5.0"
+            "ext-curl": "*",
+            "phpunit/phpunit": "^4.0 || ^5.0",
+            "psr/log": "^1.0"
         },
-        "require-dev": {
-            "phpunit/phpunit": "^4.0"
+        "suggest": {
+            "psr/log": "Required for using the Log middleware"
         },
-        "time": "2016-12-20T10:07:11+00:00",
+        "time": "2017-06-22T18:50:49+00:00",
         "type": "library",
         "extra": {
             "branch-alias": {
-                "dev-master": "1.4-dev"
+                "dev-master": "6.2-dev"
             }
         },
         "installation-source": "dist",
         "autoload": {
-            "psr-4": {
-                "GuzzleHttp\\Promise\\": "src/"
-            },
             "files": [
                 "src/functions_include.php"
-            ]
+            ],
+            "psr-4": {
+                "GuzzleHttp\\": "src/"
+            }
         },
         "notification-url": "https://packagist.org/downloads/",
         "license": [
@@ -468,53 +395,70 @@
                 "homepage": "https://github.com/mtdowling"
             }
         ],
-        "description": "Guzzle promises library",
+        "description": "Guzzle is a PHP HTTP client library",
+        "homepage": "http://guzzlephp.org/",
         "keywords": [
-            "promise"
+            "client",
+            "curl",
+            "framework",
+            "http",
+            "http client",
+            "rest",
+            "web service"
         ]
     },
     {
-        "name": "guzzlehttp/guzzle",
-        "version": "6.3.0",
-        "version_normalized": "6.3.0.0",
+        "name": "league/flysystem",
+        "version": "1.0.41",
+        "version_normalized": "1.0.41.0",
         "source": {
             "type": "git",
-            "url": "https://github.com/guzzle/guzzle.git",
-            "reference": "f4db5a78a5ea468d4831de7f0bf9d9415e348699"
+            "url": "https://github.com/thephpleague/flysystem.git",
+            "reference": "f400aa98912c561ba625ea4065031b7a41e5a155"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/guzzle/guzzle/zipball/f4db5a78a5ea468d4831de7f0bf9d9415e348699",
-            "reference": "f4db5a78a5ea468d4831de7f0bf9d9415e348699",
+            "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/f400aa98912c561ba625ea4065031b7a41e5a155",
+            "reference": "f400aa98912c561ba625ea4065031b7a41e5a155",
             "shasum": ""
         },
         "require": {
-            "guzzlehttp/promises": "^1.0",
-            "guzzlehttp/psr7": "^1.4",
-            "php": ">=5.5"
+            "php": ">=5.5.9"
+        },
+        "conflict": {
+            "league/flysystem-sftp": "<1.0.6"
         },
         "require-dev": {
-            "ext-curl": "*",
-            "phpunit/phpunit": "^4.0 || ^5.0",
-            "psr/log": "^1.0"
+            "ext-fileinfo": "*",
+            "mockery/mockery": "~0.9",
+            "phpspec/phpspec": "^2.2",
+            "phpunit/phpunit": "~4.8"
         },
         "suggest": {
-            "psr/log": "Required for using the Log middleware"
+            "ext-fileinfo": "Required for MimeType",
+            "league/flysystem-aws-s3-v2": "Allows you to use S3 storage with AWS SDK v2",
+            "league/flysystem-aws-s3-v3": "Allows you to use S3 storage with AWS SDK v3",
+            "league/flysystem-azure": "Allows you to use Windows Azure Blob storage",
+            "league/flysystem-cached-adapter": "Flysystem adapter decorator for metadata caching",
+            "league/flysystem-eventable-filesystem": "Allows you to use EventableFilesystem",
+            "league/flysystem-rackspace": "Allows you to use Rackspace Cloud Files",
+            "league/flysystem-sftp": "Allows you to use SFTP server storage via phpseclib",
+            "league/flysystem-webdav": "Allows you to use WebDAV storage",
+            "league/flysystem-ziparchive": "Allows you to use ZipArchive adapter",
+            "spatie/flysystem-dropbox": "Allows you to use Dropbox storage",
+            "srmklive/flysystem-dropbox-v2": "Allows you to use Dropbox storage for PHP 5 applications"
         },
-        "time": "2017-06-22T18:50:49+00:00",
+        "time": "2017-08-06T17:41:04+00:00",
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-                "dev-master": "6.2-dev"
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         "autoload": {
-            "files": [
-                "src/functions_include.php"
-            ],
             "psr-4": {
-                "GuzzleHttp\\": "src/"
+                "League\\Flysystem\\": "src/"
             }
         },
         "notification-url": "https://packagist.org/downloads/",
@@ -523,21 +467,29 @@
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-                "name": "Michael Dowling",
-                "email": "mtdowling@gmail.com",
-                "homepage": "https://github.com/mtdowling"
+                "name": "Frank de Jonge",
+                "email": "info@frenky.net"
             }
         ],
-        "description": "Guzzle is a PHP HTTP client library",
-        "homepage": "http://guzzlephp.org/",
+        "description": "Filesystem abstraction: Many filesystems, one API.",
         "keywords": [
-            "client",
-            "curl",
-            "framework",
-            "http",
-            "http client",
-            "rest",
-            "web service"
+            "Cloud Files",
+            "WebDAV",
+            "abstraction",
+            "aws",
+            "cloud",
+            "copy.com",
+            "dropbox",
+            "file systems",
+            "files",
+            "filesystem",
+            "filesystems",
+            "ftp",
+            "rackspace",
+            "remote",
+            "s3",
+            "sftp",
+            "storage"
         ]
     },
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@@ -590,57 +542,53 @@
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     },
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-        "version": "1.0.41",
-        "version_normalized": "1.0.41.0",
+        "name": "intervention/image",
+        "version": "2.4.1",
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-            "reference": "f400aa98912c561ba625ea4065031b7a41e5a155"
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-        "conflict": {
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+            "ext-fileinfo": "*",
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+            "php": ">=5.4.0"
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-            "mockery/mockery": "~0.9",
-            "phpspec/phpspec": "^2.2",
-            "phpunit/phpunit": "~4.8"
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-            "league/flysystem-aws-s3-v2": "Allows you to use S3 storage with AWS SDK v2",
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-            "league/flysystem-cached-adapter": "Flysystem adapter decorator for metadata caching",
-            "league/flysystem-eventable-filesystem": "Allows you to use EventableFilesystem",
-            "league/flysystem-rackspace": "Allows you to use Rackspace Cloud Files",
-            "league/flysystem-sftp": "Allows you to use SFTP server storage via phpseclib",
-            "league/flysystem-webdav": "Allows you to use WebDAV storage",
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-            "spatie/flysystem-dropbox": "Allows you to use Dropbox storage",
-            "srmklive/flysystem-dropbox-v2": "Allows you to use Dropbox storage for PHP 5 applications"
+            "ext-gd": "to use GD library based image processing.",
+            "ext-imagick": "to use Imagick based image processing.",
+            "intervention/imagecache": "Caching extension for the Intervention Image library"
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-        "time": "2017-08-06T17:41:04+00:00",
+        "time": "2017-09-21T16:29:17+00:00",
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-                "dev-master": "1.1-dev"
+                "dev-master": "2.3-dev"
+            },
+            "laravel": {
+                "providers": [
+                    "Intervention\\Image\\ImageServiceProvider"
+                ],
+                "aliases": {
+                    "Image": "Intervention\\Image\\Facades\\Image"
+                }
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         },
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         "autoload": {
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-                "League\\Flysystem\\": "src/"
+                "Intervention\\Image\\": "src/Intervention/Image"
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@@ -649,79 +597,83 @@
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-                "name": "Frank de Jonge",
-                "email": "info@frenky.net"
+                "name": "Oliver Vogel",
+                "email": "oliver@olivervogel.com",
+                "homepage": "http://olivervogel.com/"
             }
         ],
-        "description": "Filesystem abstraction: Many filesystems, one API.",
+        "description": "Image handling and manipulation library with support for Laravel integration",
+        "homepage": "http://image.intervention.io/",
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-            "WebDAV",
-            "abstraction",
-            "aws",
-            "cloud",
-            "copy.com",
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-            "filesystem",
-            "filesystems",
-            "ftp",
-            "rackspace",
-            "remote",
-            "s3",
-            "sftp",
-            "storage"
+            "gd",
+            "image",
+            "imagick",
+            "laravel",
+            "thumbnail",
+            "watermark"
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-        "version": "1.4.0",
-        "version_normalized": "1.4.0.0",
+        "name": "league/glide",
+        "version": "1.2.2",
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-            "reference": "e269fd476dc165b40f1cdc99c3051245d56c9380"
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-            "php": ">=5.3.0"
+            "intervention/image": "^2.1",
+            "league/flysystem": "^1.0",
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-            "satooshi/php-coveralls": "*"
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-        "time": "2017-08-21T11:21:58+00:00",
+        "time": "2017-05-09T17:41:49+00:00",
         "type": "library",
+        "extra": {
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+                "dev-master": "1.1-dev"
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-                "Fisharebest\\Algorithm\\": "src/"
+                "League\\Glide\\": "src/"
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         "notification-url": "https://packagist.org/downloads/",
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-            "GPL-3.0+"
+            "MIT"
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-                "name": "Greg Roach",
-                "email": "greg@subaqua.co.uk",
-                "role": "Developer"
+                "name": "Jonathan Reinink",
+                "email": "jonathan@reinink.ca",
+                "homepage": "http://reinink.ca"
             }
         ],
-        "description": "Implementation of standard algorithms in PHP.",
-        "homepage": "https://github.com/fisharebest/algorithm",
+        "description": "Wonderfully easy on-demand image manipulation library with an HTTP based API.",
+        "homepage": "http://glide.thephpleague.com",
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-            "Algorithm",
-            "diff",
-            "dijkstra",
-            "myers"
+            "ImageMagick",
+            "editing",
+            "gd",
+            "image",
+            "imagick",
+            "league",
+            "manipulation",
+            "processing"
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@@ -859,54 +811,39 @@
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-        "version": "2.4.1",
-        "version_normalized": "2.4.1.0",
+        "name": "swiftmailer/swiftmailer",
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-            "ext-imagick": "to use Imagick based image processing.",
-            "intervention/imagecache": "Caching extension for the Intervention Image library"
+            "mockery/mockery": "~0.9.1",
+            "symfony/phpunit-bridge": "~3.2"
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-        "time": "2017-09-21T16:29:17+00:00",
+        "time": "2017-05-01T15:54:03+00:00",
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-                    "Intervention\\Image\\ImageServiceProvider"
-                ],
-                "aliases": {
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         "autoload": {
-            "psr-4": {
-                "Intervention\\Image\\": "src/Intervention/Image"
-            }
+            "files": [
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+            ]
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@@ -914,59 +851,58 @@
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-                "name": "Oliver Vogel",
-                "email": "oliver@olivervogel.com",
-                "homepage": "http://olivervogel.com/"
+                "name": "Chris Corbyn"
+            },
+            {
+                "name": "Fabien Potencier",
+                "email": "fabien@symfony.com"
             }
         ],
-        "description": "Image handling and manipulation library with support for Laravel integration",
-        "homepage": "http://image.intervention.io/",
+        "description": "Swiftmailer, free feature-rich PHP mailer",
+        "homepage": "http://swiftmailer.org",
         "keywords": [
-            "gd",
-            "image",
-            "imagick",
-            "laravel",
-            "thumbnail",
-            "watermark"
+            "email",
+            "mail",
+            "mailer"
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-        "version": "0.6.1",
-        "version_normalized": "0.6.1.0",
+        "name": "symfony/polyfill-php70",
+        "version": "v1.6.0",
+        "version_normalized": "1.6.0.0",
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-            "url": "https://github.com/webuni/commonmark-table-extension.git",
-            "reference": "ebbd69b63436283ec726658835b213ec634485e8"
+            "url": "https://github.com/symfony/polyfill-php70.git",
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-            "sllh/php-cs-fixer-styleci-bridge": "^2.0",
-            "symfony/var-dumper": "^2.7|^3.0"
+            "paragonie/random_compat": "~1.0|~2.0",
+            "php": ">=5.3.3"
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-        "time": "2017-01-11T14:52:17+00:00",
+        "time": "2017-10-11T12:05:26+00:00",
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+                "dev-master": "1.6-dev"
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         "installation-source": "dist",
         "autoload": {
             "psr-4": {
-                "Webuni\\CommonMark\\TableExtension\\": "src"
-            }
+                "Symfony\\Polyfill\\Php70\\": ""
+            },
+            "files": [
+                "bootstrap.php"
+            ],
+            "classmap": [
+                "Resources/stubs"
+            ]
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         "notification-url": "https://packagist.org/downloads/",
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@@ -974,21 +910,21 @@
         ],
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-                "name": "Martin Hasoň",
-                "email": "martin.hason@gmail.com",
-                "role": "Lead Developer"
+                "name": "Nicolas Grekas",
+                "email": "p@tchwork.com"
             },
             {
-                "name": "Webuni s.r.o.",
-                "homepage": "https://www.webuni.cz"
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
             }
         ],
-        "description": "The table extension for CommonMark PHP implementation",
-        "homepage": "https://github.com/webuni/commonmark-table-extension",
+        "description": "Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions",
+        "homepage": "https://symfony.com",
         "keywords": [
-            "commonmark",
-            "markdown",
-            "table"
+            "compatibility",
+            "polyfill",
+            "portable",
+            "shim"
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     {
@@ -1053,37 +989,42 @@
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-        "name": "symfony/polyfill-php71",
-        "version": "v1.6.0",
-        "version_normalized": "1.6.0.0",
+        "name": "symfony/http-foundation",
+        "version": "v3.4.1",
+        "version_normalized": "3.4.1.0",
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-            "url": "https://github.com/symfony/polyfill-php71.git",
-            "reference": "35461cd59a8dcd5a0d2e40a9d3a712630b7c08f7"
+            "url": "https://github.com/symfony/http-foundation.git",
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+            "php": "^5.5.9|>=7.0.8",
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+            "symfony/polyfill-php70": "~1.6"
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-        "time": "2017-10-11T12:05:26+00:00",
+        "require-dev": {
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         "installation-source": "dist",
         "autoload": {
             "psr-4": {
-                "Symfony\\Polyfill\\Php71\\": ""
+                "Symfony\\Component\\HttpFoundation\\": ""
             },
-            "files": [
-                "bootstrap.php"
+            "exclude-from-classmap": [
+                "/Tests/"
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@@ -1092,36 +1033,30 @@
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-                "name": "Nicolas Grekas",
-                "email": "p@tchwork.com"
+                "name": "Fabien Potencier",
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                 "homepage": "https://symfony.com/contributors"
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-        "description": "Symfony polyfill backporting some PHP 7.1+ features to lower PHP versions",
-        "homepage": "https://symfony.com",
-        "keywords": [
-            "compatibility",
-            "polyfill",
-            "portable",
-            "shim"
-        ]
+        "description": "Symfony HttpFoundation Component",
+        "homepage": "https://symfony.com"
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+        "name": "symfony/polyfill-php71",
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@@ -1137,7 +1072,7 @@
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-                "Symfony\\Polyfill\\Php72\\": ""
+                "Symfony\\Polyfill\\Php71\\": ""
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@@ -1157,7 +1092,7 @@
                 "homepage": "https://symfony.com/contributors"
             }
         ],
-        "description": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+        "description": "Symfony polyfill backporting some PHP 7.1+ features to lower PHP versions",
         "homepage": "https://symfony.com",
         "keywords": [
             "compatibility",
@@ -1167,6 +1102,70 @@
         ]
     },
     {
+        "name": "tecnickcom/tcpdf",
+        "version": "6.2.13",
+        "version_normalized": "6.2.13.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/tecnickcom/TCPDF.git",
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+        },
+        "time": "2017-04-26T08:14:48+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "classmap": [
+                "config",
+                "include",
+                "tcpdf.php",
+                "tcpdf_parser.php",
+                "tcpdf_import.php",
+                "tcpdf_barcodes_1d.php",
+                "tcpdf_barcodes_2d.php",
+                "include/tcpdf_colors.php",
+                "include/tcpdf_filters.php",
+                "include/tcpdf_font_data.php",
+                "include/tcpdf_fonts.php",
+                "include/tcpdf_images.php",
+                "include/tcpdf_static.php",
+                "include/barcodes/datamatrix.php",
+                "include/barcodes/pdf417.php",
+                "include/barcodes/qrcode.php"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "LGPLv3"
+        ],
+        "authors": [
+            {
+                "name": "Nicola Asuni",
+                "email": "info@tecnick.com",
+                "homepage": "http://nicolaasuni.tecnick.com"
+            }
+        ],
+        "description": "TCPDF is a PHP class for generating PDF documents and barcodes.",
+        "homepage": "http://www.tcpdf.org/",
+        "keywords": [
+            "PDFD32000-2008",
+            "TCPDF",
+            "barcodes",
+            "datamatrix",
+            "pdf",
+            "pdf417",
+            "qrcode"
+        ]
+    },
+    {
         "name": "league/commonmark",
         "version": "0.15.3",
         "version_normalized": "0.15.3.0",
@@ -1238,41 +1237,98 @@
         ]
     },
     {
-        "name": "symfony/http-foundation",
-        "version": "v3.3.13",
-        "version_normalized": "3.3.13.0",
+        "name": "webuni/commonmark-table-extension",
+        "version": "0.6.1",
+        "version_normalized": "0.6.1.0",
         "source": {
             "type": "git",
-            "url": "https://github.com/symfony/http-foundation.git",
-            "reference": "5943f0f19817a7e05992d20a90729b0dc93faf36"
+            "url": "https://github.com/webuni/commonmark-table-extension.git",
+            "reference": "ebbd69b63436283ec726658835b213ec634485e8"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/symfony/http-foundation/zipball/5943f0f19817a7e05992d20a90729b0dc93faf36",
-            "reference": "5943f0f19817a7e05992d20a90729b0dc93faf36",
+            "url": "https://api.github.com/repos/webuni/commonmark-table-extension/zipball/ebbd69b63436283ec726658835b213ec634485e8",
+            "reference": "ebbd69b63436283ec726658835b213ec634485e8",
             "shasum": ""
         },
         "require": {
-            "php": "^5.5.9|>=7.0.8",
-            "symfony/polyfill-mbstring": "~1.1"
+            "league/commonmark": "^0.14|^0.15",
+            "php": "^5.5|^7.0"
         },
         "require-dev": {
-            "symfony/expression-language": "~2.8|~3.0"
+            "friendsofphp/php-cs-fixer": "^1.9",
+            "phpunit/phpunit": "^4.3|^5.0",
+            "sllh/php-cs-fixer-styleci-bridge": "^2.0",
+            "symfony/var-dumper": "^2.7|^3.0"
         },
-        "time": "2017-11-13T18:13:16+00:00",
+        "time": "2017-01-11T14:52:17+00:00",
         "type": "library",
         "extra": {
             "branch-alias": {
-                "dev-master": "3.3-dev"
+                "dev-master": "0.7-dev"
             }
         },
         "installation-source": "dist",
         "autoload": {
             "psr-4": {
-                "Symfony\\Component\\HttpFoundation\\": ""
+                "Webuni\\CommonMark\\TableExtension\\": "src"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Martin Hasoň",
+                "email": "martin.hason@gmail.com",
+                "role": "Lead Developer"
             },
-            "exclude-from-classmap": [
-                "/Tests/"
+            {
+                "name": "Webuni s.r.o.",
+                "homepage": "https://www.webuni.cz"
+            }
+        ],
+        "description": "The table extension for CommonMark PHP implementation",
+        "homepage": "https://github.com/webuni/commonmark-table-extension",
+        "keywords": [
+            "commonmark",
+            "markdown",
+            "table"
+        ]
+    },
+    {
+        "name": "symfony/polyfill-php72",
+        "version": "v1.6.0",
+        "version_normalized": "1.6.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/symfony/polyfill-php72.git",
+            "reference": "6de4f4884b97abbbed9f0a84a95ff2ff77254254"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/6de4f4884b97abbbed9f0a84a95ff2ff77254254",
+            "reference": "6de4f4884b97abbbed9f0a84a95ff2ff77254254",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.3.3"
+        },
+        "time": "2017-10-11T12:05:26+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-master": "1.6-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Symfony\\Polyfill\\Php72\\": ""
+            },
+            "files": [
+                "bootstrap.php"
             ]
         },
         "notification-url": "https://packagist.org/downloads/",
@@ -1281,15 +1337,21 @@
         ],
         "authors": [
             {
-                "name": "Fabien Potencier",
-                "email": "fabien@symfony.com"
+                "name": "Nicolas Grekas",
+                "email": "p@tchwork.com"
             },
             {
                 "name": "Symfony Community",
                 "homepage": "https://symfony.com/contributors"
             }
         ],
-        "description": "Symfony HttpFoundation Component",
-        "homepage": "https://symfony.com"
+        "description": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+        "homepage": "https://symfony.com",
+        "keywords": [
+            "compatibility",
+            "polyfill",
+            "portable",
+            "shim"
+        ]
     }
 ]
diff --git a/vendor/symfony/http-foundation/BinaryFileResponse.php b/vendor/symfony/http-foundation/BinaryFileResponse.php
index 4394863e9e..1010223042 100644
--- a/vendor/symfony/http-foundation/BinaryFileResponse.php
+++ b/vendor/symfony/http-foundation/BinaryFileResponse.php
@@ -139,7 +139,7 @@ class BinaryFileResponse extends Response
      */
     public function setAutoEtag()
     {
-        $this->setEtag(sha1_file($this->file->getPathname()));
+        $this->setEtag(base64_encode(hash_file('sha256', $this->file->getPathname(), true)));
 
         return $this;
     }
diff --git a/vendor/symfony/http-foundation/CHANGELOG.md b/vendor/symfony/http-foundation/CHANGELOG.md
index e1fdf77b9b..ee5b6cecf2 100644
--- a/vendor/symfony/http-foundation/CHANGELOG.md
+++ b/vendor/symfony/http-foundation/CHANGELOG.md
@@ -1,6 +1,16 @@
 CHANGELOG
 =========
 
+3.4.0
+-----
+
+ * implemented PHP 7.0's `SessionUpdateTimestampHandlerInterface` with a new
+   `AbstractSessionHandler` base class and a new `StrictSessionHandler` wrapper
+ * deprecated the `WriteCheckSessionHandler`, `NativeSessionHandler` and `NativeProxy` classes
+ * deprecated setting session save handlers that do not implement `\SessionHandlerInterface` in `NativeSessionStorage::setSaveHandler()`
+ * deprecated using `MongoDbSessionHandler` with the legacy mongo extension; use it with the mongodb/mongodb package and ext-mongodb instead
+ * deprecated `MemcacheSessionHandler`; use `MemcachedSessionHandler` instead
+
 3.3.0
 -----
 
diff --git a/vendor/symfony/http-foundation/HeaderBag.php b/vendor/symfony/http-foundation/HeaderBag.php
index e06713f39e..a73f345a7f 100644
--- a/vendor/symfony/http-foundation/HeaderBag.php
+++ b/vendor/symfony/http-foundation/HeaderBag.php
@@ -121,7 +121,7 @@ class HeaderBag implements \IteratorAggregate, \Countable
         }
 
         if ($first) {
-            return count($headers[$key]) ? $headers[$key][0] : $default;
+            return \count($headers[$key]) ? $headers[$key][0] : $default;
         }
 
         return $headers[$key];
@@ -138,12 +138,20 @@ class HeaderBag implements \IteratorAggregate, \Countable
     {
         $key = str_replace('_', '-', strtolower($key));
 
-        $values = array_values((array) $values);
+        if (\is_array($values)) {
+            $values = array_values($values);
 
-        if (true === $replace || !isset($this->headers[$key])) {
-            $this->headers[$key] = $values;
+            if (true === $replace || !isset($this->headers[$key])) {
+                $this->headers[$key] = $values;
+            } else {
+                $this->headers[$key] = array_merge($this->headers[$key], $values);
+            }
         } else {
-            $this->headers[$key] = array_merge($this->headers[$key], $values);
+            if (true === $replace || !isset($this->headers[$key])) {
+                $this->headers[$key] = array($values);
+            } else {
+                $this->headers[$key][] = $values;
+            }
         }
 
         if ('cache-control' === $key) {
diff --git a/vendor/symfony/http-foundation/Request.php b/vendor/symfony/http-foundation/Request.php
index e8412b50ef..d45d54091e 100644
--- a/vendor/symfony/http-foundation/Request.php
+++ b/vendor/symfony/http-foundation/Request.php
@@ -1579,6 +1579,30 @@ class Request
     }
 
     /**
+     * Returns the protocol version.
+     *
+     * If the application is behind a proxy, the protocol version used in the
+     * requests between the client and the proxy and between the proxy and the
+     * server might be different. This returns the former (from the "Via" header)
+     * if the proxy is trusted (see "setTrustedProxies()"), otherwise it returns
+     * the latter (from the "SERVER_PROTOCOL" server parameter).
+     *
+     * @return string
+     */
+    public function getProtocolVersion()
+    {
+        if ($this->isFromTrustedProxy()) {
+            preg_match('~^(HTTP/)?([1-9]\.[0-9]) ~', $this->headers->get('Via'), $matches);
+
+            if ($matches) {
+                return 'HTTP/'.$matches[2];
+            }
+        }
+
+        return $this->server->get('SERVER_PROTOCOL');
+    }
+
+    /**
      * Returns the request body content.
      *
      * @param bool $asResource If true, a resource will be returned
@@ -1904,12 +1928,12 @@ class Request
      */
     protected function prepareBasePath()
     {
-        $filename = basename($this->server->get('SCRIPT_FILENAME'));
         $baseUrl = $this->getBaseUrl();
         if (empty($baseUrl)) {
             return '';
         }
 
+        $filename = basename($this->server->get('SCRIPT_FILENAME'));
         if (basename($baseUrl) === $filename) {
             $basePath = dirname($baseUrl);
         } else {
@@ -1930,8 +1954,6 @@ class Request
      */
     protected function preparePathInfo()
     {
-        $baseUrl = $this->getBaseUrl();
-
         if (null === ($requestUri = $this->getRequestUri())) {
             return '/';
         }
@@ -1944,12 +1966,14 @@ class Request
             $requestUri = '/'.$requestUri;
         }
 
+        if (null === ($baseUrl = $this->getBaseUrl())) {
+            return $requestUri;
+        }
+
         $pathInfo = substr($requestUri, strlen($baseUrl));
-        if (null !== $baseUrl && (false === $pathInfo || '' === $pathInfo)) {
+        if (false === $pathInfo || '' === $pathInfo) {
             // If substr() returns false then PATH_INFO is set to an empty string
             return '/';
-        } elseif (null === $baseUrl) {
-            return $requestUri;
         }
 
         return (string) $pathInfo;
diff --git a/vendor/symfony/http-foundation/Response.php b/vendor/symfony/http-foundation/Response.php
index d7d30f0c26..e079ae2e95 100644
--- a/vendor/symfony/http-foundation/Response.php
+++ b/vendor/symfony/http-foundation/Response.php
@@ -200,11 +200,6 @@ class Response
         $this->setContent($content);
         $this->setStatusCode($status);
         $this->setProtocolVersion('1.0');
-
-        /* RFC2616 - 14.18 says all Responses need to have a Date */
-        if (!$this->headers->has('Date')) {
-            $this->setDate(\DateTime::createFromFormat('U', time()));
-        }
     }
 
     /**
@@ -331,11 +326,6 @@ class Response
             return $this;
         }
 
-        /* RFC2616 - 14.18 says all Responses need to have a Date */
-        if (!$this->headers->has('Date')) {
-            $this->setDate(\DateTime::createFromFormat('U', time()));
-        }
-
         // headers
         foreach ($this->headers->allPreserveCaseWithoutCookies() as $name => $values) {
             foreach ($values as $value) {
@@ -618,6 +608,38 @@ class Response
     }
 
     /**
+     * Marks the response as "immutable".
+     *
+     * @param bool $immutable enables or disables the immutable directive
+     *
+     * @return $this
+     *
+     * @final
+     */
+    public function setImmutable($immutable = true)
+    {
+        if ($immutable) {
+            $this->headers->addCacheControlDirective('immutable');
+        } else {
+            $this->headers->removeCacheControlDirective('immutable');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Returns true if the response is marked as "immutable".
+     *
+     * @return bool returns true if the response is marked as "immutable"; otherwise false
+     *
+     * @final
+     */
+    public function isImmutable()
+    {
+        return $this->headers->hasCacheControlDirective('immutable');
+    }
+
+    /**
      * Returns true if the response must be revalidated by caches.
      *
      * This method indicates that the response must not be served stale by a
@@ -645,15 +667,6 @@ class Response
      */
     public function getDate()
     {
-        /*
-            RFC2616 - 14.18 says all Responses need to have a Date.
-            Make sure we provide one even if it the header
-            has been removed in the meantime.
-         */
-        if (!$this->headers->has('Date')) {
-            $this->setDate(\DateTime::createFromFormat('U', time()));
-        }
-
         return $this->headers->getDate('Date');
     }
 
@@ -951,7 +964,7 @@ class Response
      */
     public function setCache(array $options)
     {
-        if ($diff = array_diff(array_keys($options), array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public'))) {
+        if ($diff = array_diff(array_keys($options), array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public', 'immutable'))) {
             throw new \InvalidArgumentException(sprintf('Response does not support the following options: "%s".', implode('", "', array_values($diff))));
         }
 
@@ -987,6 +1000,10 @@ class Response
             }
         }
 
+        if (isset($options['immutable'])) {
+            $this->setImmutable((bool) $options['immutable']);
+        }
+
         return $this;
     }
 
diff --git a/vendor/symfony/http-foundation/ResponseHeaderBag.php b/vendor/symfony/http-foundation/ResponseHeaderBag.php
index 717cc442f2..11a859326b 100644
--- a/vendor/symfony/http-foundation/ResponseHeaderBag.php
+++ b/vendor/symfony/http-foundation/ResponseHeaderBag.php
@@ -35,6 +35,11 @@ class ResponseHeaderBag extends HeaderBag
         if (!isset($this->headers['cache-control'])) {
             $this->set('Cache-Control', '');
         }
+
+        /* RFC2616 - 14.18 says all Responses need to have a Date */
+        if (!isset($this->headers['date'])) {
+            $this->initDate();
+        }
     }
 
     /**
@@ -74,6 +79,10 @@ class ResponseHeaderBag extends HeaderBag
         if (!isset($this->headers['cache-control'])) {
             $this->set('Cache-Control', '');
         }
+
+        if (!isset($this->headers['date'])) {
+            $this->initDate();
+        }
     }
 
     /**
@@ -113,7 +122,7 @@ class ResponseHeaderBag extends HeaderBag
         parent::set($key, $values, $replace);
 
         // ensure the cache-control header has sensible defaults
-        if (in_array($uniqueKey, array('cache-control', 'etag', 'last-modified', 'expires'))) {
+        if (\in_array($uniqueKey, array('cache-control', 'etag', 'last-modified', 'expires'), true)) {
             $computed = $this->computeCacheControlValue();
             $this->headers['cache-control'] = array($computed);
             $this->headerNames['cache-control'] = 'Cache-Control';
@@ -140,6 +149,10 @@ class ResponseHeaderBag extends HeaderBag
         if ('cache-control' === $uniqueKey) {
             $this->computedCacheControl = array();
         }
+
+        if ('date' === $uniqueKey) {
+            $this->initDate();
+        }
     }
 
     /**
@@ -317,4 +330,11 @@ class ResponseHeaderBag extends HeaderBag
 
         return $header;
     }
+
+    private function initDate()
+    {
+        $now = \DateTime::createFromFormat('U', time());
+        $now->setTimezone(new \DateTimeZone('UTC'));
+        $this->set('Date', $now->format('D, d M Y H:i:s').' GMT');
+    }
 }
diff --git a/vendor/symfony/http-foundation/Session/Flash/AutoExpireFlashBag.php b/vendor/symfony/http-foundation/Session/Flash/AutoExpireFlashBag.php
index 59ba309005..77521c2478 100644
--- a/vendor/symfony/http-foundation/Session/Flash/AutoExpireFlashBag.php
+++ b/vendor/symfony/http-foundation/Session/Flash/AutoExpireFlashBag.php
@@ -25,7 +25,7 @@ class AutoExpireFlashBag implements FlashBagInterface
     /**
      * @param string $storageKey The key used to store flashes in the session
      */
-    public function __construct($storageKey = '_sf2_flashes')
+    public function __construct($storageKey = '_symfony_flashes')
     {
         $this->storageKey = $storageKey;
     }
@@ -106,7 +106,7 @@ class AutoExpireFlashBag implements FlashBagInterface
     public function all()
     {
         $return = $this->flashes['display'];
-        $this->flashes = array('new' => array(), 'display' => array());
+        $this->flashes['display'] = array();
 
         return $return;
     }
diff --git a/vendor/symfony/http-foundation/Session/Flash/FlashBag.php b/vendor/symfony/http-foundation/Session/Flash/FlashBag.php
index 9c2e3fe7c8..12fb740c52 100644
--- a/vendor/symfony/http-foundation/Session/Flash/FlashBag.php
+++ b/vendor/symfony/http-foundation/Session/Flash/FlashBag.php
@@ -25,7 +25,7 @@ class FlashBag implements FlashBagInterface
     /**
      * @param string $storageKey The key used to store flashes in the session
      */
-    public function __construct($storageKey = '_sf2_flashes')
+    public function __construct($storageKey = '_symfony_flashes')
     {
         $this->storageKey = $storageKey;
     }
diff --git a/vendor/symfony/http-foundation/Session/Session.php b/vendor/symfony/http-foundation/Session/Session.php
index 09caa3442f..0c3371fab6 100644
--- a/vendor/symfony/http-foundation/Session/Session.php
+++ b/vendor/symfony/http-foundation/Session/Session.php
@@ -28,6 +28,7 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
 
     private $flashName;
     private $attributeName;
+    private $data = array();
 
     /**
      * @param SessionStorageInterface $storage    A SessionStorageInterface instance
@@ -108,7 +109,7 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
      */
     public function clear()
     {
-        $this->storage->getBag($this->attributeName)->clear();
+        $this->getAttributeBag()->clear();
     }
 
     /**
@@ -140,6 +141,22 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
     }
 
     /**
+     * @return bool
+     *
+     * @internal
+     */
+    public function isEmpty()
+    {
+        foreach ($this->data as &$data) {
+            if (!empty($data)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
      * {@inheritdoc}
      */
     public function invalidate($lifetime = null)
@@ -210,7 +227,7 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
      */
     public function registerBag(SessionBagInterface $bag)
     {
-        $this->storage->registerBag($bag);
+        $this->storage->registerBag(new SessionBagProxy($bag, $this->data));
     }
 
     /**
@@ -218,7 +235,7 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
      */
     public function getBag($name)
     {
-        return $this->storage->getBag($name);
+        return $this->storage->getBag($name)->getBag();
     }
 
     /**
@@ -240,6 +257,6 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
      */
     private function getAttributeBag()
     {
-        return $this->storage->getBag($this->attributeName);
+        return $this->storage->getBag($this->attributeName)->getBag();
     }
 }
diff --git a/vendor/symfony/http-foundation/Session/SessionBagProxy.php b/vendor/symfony/http-foundation/Session/SessionBagProxy.php
new file mode 100644
index 0000000000..6c4cab6716
--- /dev/null
+++ b/vendor/symfony/http-foundation/Session/SessionBagProxy.php
@@ -0,0 +1,79 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Session;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+final class SessionBagProxy implements SessionBagInterface
+{
+    private $bag;
+    private $data;
+
+    public function __construct(SessionBagInterface $bag, array &$data)
+    {
+        $this->bag = $bag;
+        $this->data = &$data;
+    }
+
+    /**
+     * @return SessionBagInterface
+     */
+    public function getBag()
+    {
+        return $this->bag;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isEmpty()
+    {
+        return empty($this->data[$this->bag->getStorageKey()]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return $this->bag->getName();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function initialize(array &$array)
+    {
+        $this->data[$this->bag->getStorageKey()] = &$array;
+
+        $this->bag->initialize($array);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getStorageKey()
+    {
+        return $this->bag->getStorageKey();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        return $this->bag->clear();
+    }
+}
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/AbstractSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/AbstractSessionHandler.php
new file mode 100644
index 0000000000..7c6c476aac
--- /dev/null
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/AbstractSessionHandler.php
@@ -0,0 +1,168 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
+
+/**
+ * This abstract session handler provides a generic implementation
+ * of the PHP 7.0 SessionUpdateTimestampHandlerInterface,
+ * enabling strict and lazy session handling.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+abstract class AbstractSessionHandler implements \SessionHandlerInterface, \SessionUpdateTimestampHandlerInterface
+{
+    private $sessionName;
+    private $prefetchId;
+    private $prefetchData;
+    private $newSessionId;
+    private $igbinaryEmptyData;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function open($savePath, $sessionName)
+    {
+        $this->sessionName = $sessionName;
+        if (!headers_sent() && !ini_get('session.cache_limiter') && '0' !== ini_get('session.cache_limiter')) {
+            header(sprintf('Cache-Control: max-age=%d, private, must-revalidate', 60 * (int) ini_get('session.cache_expire')));
+        }
+
+        return true;
+    }
+
+    /**
+     * @param string $sessionId
+     *
+     * @return string
+     */
+    abstract protected function doRead($sessionId);
+
+    /**
+     * @param string $sessionId
+     * @param string $data
+     *
+     * @return bool
+     */
+    abstract protected function doWrite($sessionId, $data);
+
+    /**
+     * @param string $sessionId
+     *
+     * @return bool
+     */
+    abstract protected function doDestroy($sessionId);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function validateId($sessionId)
+    {
+        $this->prefetchData = $this->read($sessionId);
+        $this->prefetchId = $sessionId;
+
+        return '' !== $this->prefetchData;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function read($sessionId)
+    {
+        if (null !== $this->prefetchId) {
+            $prefetchId = $this->prefetchId;
+            $prefetchData = $this->prefetchData;
+            $this->prefetchId = $this->prefetchData = null;
+
+            if ($prefetchId === $sessionId || '' === $prefetchData) {
+                $this->newSessionId = '' === $prefetchData ? $sessionId : null;
+
+                return $prefetchData;
+            }
+        }
+
+        $data = $this->doRead($sessionId);
+        $this->newSessionId = '' === $data ? $sessionId : null;
+        if (\PHP_VERSION_ID < 70000) {
+            $this->prefetchData = $data;
+        }
+
+        return $data;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function write($sessionId, $data)
+    {
+        if (\PHP_VERSION_ID < 70000 && $this->prefetchData) {
+            $readData = $this->prefetchData;
+            $this->prefetchData = null;
+
+            if ($readData === $data) {
+                return $this->updateTimestamp($sessionId, $data);
+            }
+        }
+        if (null === $this->igbinaryEmptyData) {
+            // see https://github.com/igbinary/igbinary/issues/146
+            $this->igbinaryEmptyData = \function_exists('igbinary_serialize') ? igbinary_serialize(array()) : '';
+        }
+        if ('' === $data || $this->igbinaryEmptyData === $data) {
+            return $this->destroy($sessionId);
+        }
+        $this->newSessionId = null;
+
+        return $this->doWrite($sessionId, $data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function destroy($sessionId)
+    {
+        if (\PHP_VERSION_ID < 70000) {
+            $this->prefetchData = null;
+        }
+        if (!headers_sent() && ini_get('session.use_cookies')) {
+            if (!$this->sessionName) {
+                throw new \LogicException(sprintf('Session name cannot be empty, did you forget to call "parent::open()" in "%s"?.', get_class($this)));
+            }
+            $sessionCookie = sprintf(' %s=', urlencode($this->sessionName));
+            $sessionCookieWithId = sprintf('%s%s;', $sessionCookie, urlencode($sessionId));
+            $sessionCookieFound = false;
+            $otherCookies = array();
+            foreach (headers_list() as $h) {
+                if (0 !== stripos($h, 'Set-Cookie:')) {
+                    continue;
+                }
+                if (11 === strpos($h, $sessionCookie, 11)) {
+                    $sessionCookieFound = true;
+
+                    if (11 !== strpos($h, $sessionCookieWithId, 11)) {
+                        $otherCookies[] = $h;
+                    }
+                } else {
+                    $otherCookies[] = $h;
+                }
+            }
+            if ($sessionCookieFound) {
+                header_remove('Set-Cookie');
+                foreach ($otherCookies as $h) {
+                    header('Set-Cookie:'.$h, false);
+                }
+            } else {
+                setcookie($this->sessionName, '', 0, ini_get('session.cookie_path'), ini_get('session.cookie_domain'), ini_get('session.cookie_secure'), ini_get('session.cookie_httponly'));
+            }
+        }
+
+        return $this->newSessionId === $sessionId || $this->doDestroy($sessionId);
+    }
+}
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/MemcacheSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/MemcacheSessionHandler.php
index 89b4dac2c6..84f4357b12 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/MemcacheSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/MemcacheSessionHandler.php
@@ -11,8 +11,12 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
+@trigger_error(sprintf('The class %s is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler instead.', MemcacheSessionHandler::class), E_USER_DEPRECATED);
+
 /**
  * @author Drak <drak@zikula.org>
+ *
+ * @deprecated since version 3.4, to be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler instead.
  */
 class MemcacheSessionHandler implements \SessionHandlerInterface
 {
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/MemcachedSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/MemcachedSessionHandler.php
index 6e2c2ee306..2d600b66cd 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/MemcachedSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/MemcachedSessionHandler.php
@@ -19,7 +19,7 @@ namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
  *
  * @author Drak <drak@zikula.org>
  */
-class MemcachedSessionHandler implements \SessionHandlerInterface
+class MemcachedSessionHandler extends AbstractSessionHandler
 {
     private $memcached;
 
@@ -36,7 +36,7 @@ class MemcachedSessionHandler implements \SessionHandlerInterface
     /**
      * List of available options:
      *  * prefix: The prefix to use for the memcached keys in order to avoid collision
-     *  * expiretime: The time to live in seconds
+     *  * expiretime: The time to live in seconds.
      *
      * @param \Memcached $memcached A \Memcached instance
      * @param array      $options   An associative array of Memcached options
@@ -60,7 +60,7 @@ class MemcachedSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function open($savePath, $sessionName)
+    public function close()
     {
         return true;
     }
@@ -68,23 +68,23 @@ class MemcachedSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function close()
+    protected function doRead($sessionId)
     {
-        return true;
+        return $this->memcached->get($this->prefix.$sessionId) ?: '';
     }
 
     /**
      * {@inheritdoc}
      */
-    public function read($sessionId)
+    public function updateTimestamp($sessionId, $data)
     {
-        return $this->memcached->get($this->prefix.$sessionId) ?: '';
+        return $this->memcached->touch($this->prefix.$sessionId, time() + $this->ttl);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function write($sessionId, $data)
+    protected function doWrite($sessionId, $data)
     {
         return $this->memcached->set($this->prefix.$sessionId, $data, time() + $this->ttl);
     }
@@ -92,7 +92,7 @@ class MemcachedSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function destroy($sessionId)
+    protected function doDestroy($sessionId)
     {
         $result = $this->memcached->delete($this->prefix.$sessionId);
 
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/MongoDbSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/MongoDbSessionHandler.php
index 29fc3f529b..264144d5b5 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/MongoDbSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/MongoDbSessionHandler.php
@@ -12,9 +12,14 @@
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
 /**
+ * Session handler using the mongodb/mongodb package and MongoDB driver extension.
+ *
  * @author Markus Bachmann <markus.bachmann@bachi.biz>
+ *
+ * @see https://packagist.org/packages/mongodb/mongodb
+ * @see http://php.net/manual/en/set.mongodb.php
  */
-class MongoDbSessionHandler implements \SessionHandlerInterface
+class MongoDbSessionHandler extends AbstractSessionHandler
 {
     private $mongo;
 
@@ -35,7 +40,7 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
      *  * id_field: The field name for storing the session id [default: _id]
      *  * data_field: The field name for storing the session data [default: data]
      *  * time_field: The field name for storing the timestamp [default: time]
-     *  * expiry_field: The field name for storing the expiry-timestamp [default: expires_at]
+     *  * expiry_field: The field name for storing the expiry-timestamp [default: expires_at].
      *
      * It is strongly recommended to put an index on the `expiry_field` for
      * garbage-collection. Alternatively it's possible to automatically expire
@@ -54,14 +59,18 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
      * If you use such an index, you can drop `gc_probability` to 0 since
      * no garbage-collection is required.
      *
-     * @param \Mongo|\MongoClient|\MongoDB\Client $mongo   A MongoDB\Client, MongoClient or Mongo instance
-     * @param array                               $options An associative array of field options
+     * @param \MongoDB\Client $mongo   A MongoDB\Client instance
+     * @param array           $options An associative array of field options
      *
      * @throws \InvalidArgumentException When MongoClient or Mongo instance not provided
      * @throws \InvalidArgumentException When "database" or "collection" not provided
      */
     public function __construct($mongo, array $options)
     {
+        if ($mongo instanceof \MongoClient || $mongo instanceof \Mongo) {
+            @trigger_error(sprintf('Using %s with the legacy mongo extension is deprecated as of 3.4 and will be removed in 4.0. Use it with the mongodb/mongodb package and ext-mongodb instead.', __CLASS__), E_USER_DEPRECATED);
+        }
+
         if (!($mongo instanceof \MongoDB\Client || $mongo instanceof \MongoClient || $mongo instanceof \Mongo)) {
             throw new \InvalidArgumentException('MongoClient or Mongo instance required');
         }
@@ -83,14 +92,6 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function open($savePath, $sessionName)
-    {
-        return true;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
     public function close()
     {
         return true;
@@ -99,7 +100,7 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function destroy($sessionId)
+    protected function doDestroy($sessionId)
     {
         $methodName = $this->mongo instanceof \MongoDB\Client ? 'deleteOne' : 'remove';
 
@@ -127,7 +128,7 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function write($sessionId, $data)
+    protected function doWrite($sessionId, $data)
     {
         $expiry = $this->createDateTime(time() + (int) ini_get('session.gc_maxlifetime'));
 
@@ -159,7 +160,34 @@ class MongoDbSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function read($sessionId)
+    public function updateTimestamp($sessionId, $data)
+    {
+        $expiry = $this->createDateTime(time() + (int) ini_get('session.gc_maxlifetime'));
+
+        if ($this->mongo instanceof \MongoDB\Client) {
+            $methodName = 'updateOne';
+            $options = array();
+        } else {
+            $methodName = 'update';
+            $options = array('multiple' => false);
+        }
+
+        $this->getCollection()->$methodName(
+            array($this->options['id_field'] => $sessionId),
+            array('$set' => array(
+                $this->options['time_field'] => $this->createDateTime(),
+                $this->options['expiry_field'] => $expiry,
+            )),
+            $options
+        );
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doRead($sessionId)
     {
         $dbData = $this->getCollection()->findOne(array(
             $this->options['id_field'] => $sessionId,
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/NativeFileSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/NativeFileSessionHandler.php
index d6ad93749f..4e9704bd58 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/NativeFileSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/NativeFileSessionHandler.php
@@ -26,6 +26,7 @@ class NativeFileSessionHandler extends NativeSessionHandler
      * @see http://php.net/session.configuration.php#ini.session.save-path for further details.
      *
      * @throws \InvalidArgumentException On invalid $savePath
+     * @throws \RuntimeException         When failing to create the save directory
      */
     public function __construct($savePath = null)
     {
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/NativeSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/NativeSessionHandler.php
index 4ae410f9b9..9ea4629ca1 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/NativeSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/NativeSessionHandler.php
@@ -12,10 +12,13 @@
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
 /**
- * Adds SessionHandler functionality if available.
- *
+ * @deprecated since version 3.4, to be removed in 4.0. Use \SessionHandler instead.
  * @see http://php.net/sessionhandler
  */
 class NativeSessionHandler extends \SessionHandler
 {
+    public function __construct()
+    {
+        @trigger_error('The '.__NAMESPACE__.'\NativeSessionHandler class is deprecated since version 3.4 and will be removed in 4.0. Use the \SessionHandler class instead.', E_USER_DEPRECATED);
+    }
 }
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/NullSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/NullSessionHandler.php
index 1516d4314a..8d193155b0 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/NullSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/NullSessionHandler.php
@@ -12,18 +12,16 @@
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
 /**
- * NullSessionHandler.
- *
  * Can be used in unit testing or in a situations where persisted sessions are not desired.
  *
  * @author Drak <drak@zikula.org>
  */
-class NullSessionHandler implements \SessionHandlerInterface
+class NullSessionHandler extends AbstractSessionHandler
 {
     /**
      * {@inheritdoc}
      */
-    public function open($savePath, $sessionName)
+    public function close()
     {
         return true;
     }
@@ -31,7 +29,7 @@ class NullSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function close()
+    public function validateId($sessionId)
     {
         return true;
     }
@@ -39,7 +37,7 @@ class NullSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function read($sessionId)
+    protected function doRead($sessionId)
     {
         return '';
     }
@@ -47,7 +45,15 @@ class NullSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function write($sessionId, $data)
+    public function updateTimestamp($sessionId, $data)
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doWrite($sessionId, $data)
     {
         return true;
     }
@@ -55,7 +61,7 @@ class NullSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function destroy($sessionId)
+    protected function doDestroy($sessionId)
     {
         return true;
     }
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/PdoSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/PdoSessionHandler.php
index daabbc21f0..bccfbf611f 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/PdoSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/PdoSessionHandler.php
@@ -38,7 +38,7 @@ namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
  * @author Michael Williams <michael.williams@funsational.com>
  * @author Tobias Schultze <http://tobion.de>
  */
-class PdoSessionHandler implements \SessionHandlerInterface
+class PdoSessionHandler extends AbstractSessionHandler
 {
     /**
      * No locking is done. This means sessions are prone to loss of data due to
@@ -260,11 +260,13 @@ class PdoSessionHandler implements \SessionHandlerInterface
      */
     public function open($savePath, $sessionName)
     {
+        $this->sessionExpired = false;
+
         if (null === $this->pdo) {
             $this->connect($this->dsn ?: $savePath);
         }
 
-        return true;
+        return parent::open($savePath, $sessionName);
     }
 
     /**
@@ -273,7 +275,7 @@ class PdoSessionHandler implements \SessionHandlerInterface
     public function read($sessionId)
     {
         try {
-            return $this->doRead($sessionId);
+            return parent::read($sessionId);
         } catch (\PDOException $e) {
             $this->rollback();
 
@@ -296,7 +298,7 @@ class PdoSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function destroy($sessionId)
+    protected function doDestroy($sessionId)
     {
         // delete the record associated with this id
         $sql = "DELETE FROM $this->table WHERE $this->idCol = :id";
@@ -317,7 +319,7 @@ class PdoSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
-    public function write($sessionId, $data)
+    protected function doWrite($sessionId, $data)
     {
         $maxlifetime = (int) ini_get('session.gc_maxlifetime');
 
@@ -375,6 +377,30 @@ class PdoSessionHandler implements \SessionHandlerInterface
     /**
      * {@inheritdoc}
      */
+    public function updateTimestamp($sessionId, $data)
+    {
+        $maxlifetime = (int) ini_get('session.gc_maxlifetime');
+
+        try {
+            $updateStmt = $this->pdo->prepare(
+                "UPDATE $this->table SET $this->lifetimeCol = :lifetime, $this->timeCol = :time WHERE $this->idCol = :id"
+            );
+            $updateStmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
+            $updateStmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
+            $updateStmt->bindValue(':time', time(), \PDO::PARAM_INT);
+            $updateStmt->execute();
+        } catch (\PDOException $e) {
+            $this->rollback();
+
+            throw $e;
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
     public function close()
     {
         $this->commit();
@@ -491,10 +517,8 @@ class PdoSessionHandler implements \SessionHandlerInterface
      *
      * @return string The session data
      */
-    private function doRead($sessionId)
+    protected function doRead($sessionId)
     {
-        $this->sessionExpired = false;
-
         if (self::LOCK_ADVISORY === $this->lockMode) {
             $this->unlockStatements[] = $this->doAdvisoryLock($sessionId);
         }
@@ -517,7 +541,9 @@ class PdoSessionHandler implements \SessionHandlerInterface
                 return is_resource($sessionRows[0][0]) ? stream_get_contents($sessionRows[0][0]) : $sessionRows[0][0];
             }
 
-            if (self::LOCK_TRANSACTIONAL === $this->lockMode && 'sqlite' !== $this->driver) {
+            if (!ini_get('session.use_strict_mode') && self::LOCK_TRANSACTIONAL === $this->lockMode && 'sqlite' !== $this->driver) {
+                // In strict mode, session fixation is not possible: new sessions always start with a unique
+                // random id, so that concurrency is not possible and this code path can be skipped.
                 // Exclusive-reading of non-existent rows does not block, so we need to do an insert to block
                 // until other connections to the session are committed.
                 try {
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/StrictSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/StrictSessionHandler.php
new file mode 100644
index 0000000000..1bad0641e8
--- /dev/null
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/StrictSessionHandler.php
@@ -0,0 +1,89 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
+
+/**
+ * Adds basic `SessionUpdateTimestampHandlerInterface` behaviors to another `SessionHandlerInterface`.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class StrictSessionHandler extends AbstractSessionHandler
+{
+    private $handler;
+
+    public function __construct(\SessionHandlerInterface $handler)
+    {
+        if ($handler instanceof \SessionUpdateTimestampHandlerInterface) {
+            throw new \LogicException(sprintf('"%s" is already an instance of "SessionUpdateTimestampHandlerInterface", you cannot wrap it with "%s".', get_class($handler), self::class));
+        }
+
+        $this->handler = $handler;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function open($savePath, $sessionName)
+    {
+        parent::open($savePath, $sessionName);
+
+        return $this->handler->open($savePath, $sessionName);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doRead($sessionId)
+    {
+        return $this->handler->read($sessionId);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function updateTimestamp($sessionId, $data)
+    {
+        return $this->write($sessionId, $data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doWrite($sessionId, $data)
+    {
+        return $this->handler->write($sessionId, $data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDestroy($sessionId)
+    {
+        return $this->handler->destroy($sessionId);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function close()
+    {
+        return $this->handler->close();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function gc($maxlifetime)
+    {
+        return $this->handler->gc($maxlifetime);
+    }
+}
diff --git a/vendor/symfony/http-foundation/Session/Storage/Handler/WriteCheckSessionHandler.php b/vendor/symfony/http-foundation/Session/Storage/Handler/WriteCheckSessionHandler.php
index 7f4b6bc034..2fc7e09195 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Handler/WriteCheckSessionHandler.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Handler/WriteCheckSessionHandler.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
+@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Implement `SessionUpdateTimestampHandlerInterface` or extend `AbstractSessionHandler` instead.', WriteCheckSessionHandler::class), E_USER_DEPRECATED);
+
 /**
  * Wraps another SessionHandlerInterface to only write the session when it has been modified.
  *
  * @author Adrien Brault <adrien.brault@gmail.com>
+ *
+ * @deprecated since version 3.4, to be removed in 4.0. Implement `SessionUpdateTimestampHandlerInterface` or extend `AbstractSessionHandler` instead.
  */
 class WriteCheckSessionHandler implements \SessionHandlerInterface
 {
diff --git a/vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php b/vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php
index 0a580d6027..14f427007b 100644
--- a/vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php
+++ b/vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php
@@ -91,7 +91,26 @@ class MockFileSessionStorage extends MockArraySessionStorage
             throw new \RuntimeException('Trying to save a session that was not started yet or was already closed');
         }
 
-        file_put_contents($this->getFilePath(), serialize($this->data));
+        $data = $this->data;
+
+        foreach ($this->bags as $bag) {
+            if (empty($data[$key = $bag->getStorageKey()])) {
+                unset($data[$key]);
+            }
+        }
+        if (array($key = $this->metadataBag->getStorageKey()) === array_keys($data)) {
+            unset($data[$key]);
+        }
+
+        try {
+            if ($data) {
+                file_put_contents($this->getFilePath(), serialize($data));
+            } else {
+                $this->destroy();
+            }
+        } finally {
+            $this->data = $data;
+        }
 
         // this is needed for Silex, where the session object is re-used across requests
         // in functional tests. In Symfony, the container is rebooted, so we don't have
diff --git a/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php b/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php
index 5620aae3cd..0dfad9acb3 100644
--- a/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php
+++ b/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php
@@ -11,9 +11,8 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage;
 
-use Symfony\Component\Debug\Exception\ContextErrorException;
 use Symfony\Component\HttpFoundation\Session\SessionBagInterface;
-use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler;
+use Symfony\Component\HttpFoundation\Session\Storage\Handler\StrictSessionHandler;
 use Symfony\Component\HttpFoundation\Session\Storage\Proxy\AbstractProxy;
 use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;
 
@@ -25,11 +24,9 @@ use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;
 class NativeSessionStorage implements SessionStorageInterface
 {
     /**
-     * Array of SessionBagInterface.
-     *
      * @var SessionBagInterface[]
      */
-    protected $bags;
+    protected $bags = array();
 
     /**
      * @var bool
@@ -42,7 +39,7 @@ class NativeSessionStorage implements SessionStorageInterface
     protected $closed = false;
 
     /**
-     * @var AbstractProxy
+     * @var AbstractProxy|\SessionHandlerInterface
      */
     protected $saveHandler;
 
@@ -64,6 +61,7 @@ class NativeSessionStorage implements SessionStorageInterface
      * PHP starts to execute user-land code. Setting during runtime has no effect).
      *
      * cache_limiter, "" (use "0" to prevent headers from being sent entirely).
+     * cache_expire, "0"
      * cookie_domain, ""
      * cookie_httponly, ""
      * cookie_lifetime, "0"
@@ -96,16 +94,17 @@ class NativeSessionStorage implements SessionStorageInterface
      * trans_sid_hosts, $_SERVER['HTTP_HOST']
      * trans_sid_tags, "a=href,area=href,frame=src,form="
      *
-     * @param array                                                            $options Session configuration options
-     * @param AbstractProxy|NativeSessionHandler|\SessionHandlerInterface|null $handler
-     * @param MetadataBag                                                      $metaBag MetadataBag
+     * @param array                         $options Session configuration options
+     * @param \SessionHandlerInterface|null $handler
+     * @param MetadataBag                   $metaBag MetadataBag
      */
     public function __construct(array $options = array(), $handler = null, MetadataBag $metaBag = null)
     {
         $options += array(
-            // disable by default because it's managed by HeaderBag (if used)
             'cache_limiter' => '',
+            'cache_expire' => 0,
             'use_cookies' => 1,
+            'lazy_write' => 1,
         );
 
         session_register_shutdown();
@@ -118,7 +117,7 @@ class NativeSessionStorage implements SessionStorageInterface
     /**
      * Gets the save handler instance.
      *
-     * @return AbstractProxy
+     * @return AbstractProxy|\SessionHandlerInterface
      */
     public function getSaveHandler()
     {
@@ -220,15 +219,31 @@ class NativeSessionStorage implements SessionStorageInterface
      */
     public function save()
     {
+        $session = $_SESSION;
+
+        foreach ($this->bags as $bag) {
+            if (empty($_SESSION[$key = $bag->getStorageKey()])) {
+                unset($_SESSION[$key]);
+            }
+        }
+        if (array($key = $this->metadataBag->getStorageKey()) === array_keys($_SESSION)) {
+            unset($_SESSION[$key]);
+        }
+
         // Register custom error handler to catch a possible failure warning during session write
-        set_error_handler(function ($errno, $errstr, $errfile, $errline, $errcontext) {
-            throw new ContextErrorException($errstr, $errno, E_WARNING, $errfile, $errline, $errcontext);
+        set_error_handler(function ($errno, $errstr, $errfile, $errline) {
+            throw new \ErrorException($errstr, $errno, E_WARNING, $errfile, $errline);
         }, E_WARNING);
 
         try {
+            $e = null;
             session_write_close();
+        } catch (\ErrorException $e) {
+        } finally {
             restore_error_handler();
-        } catch (ContextErrorException $e) {
+            $_SESSION = $session;
+        }
+        if (null !== $e) {
             // The default PHP error message is not very helpful, as it does not give any information on the current save handler.
             // Therefore, we catch this error and trigger a warning with a better error message
             $handler = $this->getSaveHandler();
@@ -236,7 +251,6 @@ class NativeSessionStorage implements SessionStorageInterface
                 $handler = $handler->getHandler();
             }
 
-            restore_error_handler();
             trigger_error(sprintf('session_write_close(): Failed to write session data with %s handler', get_class($handler)), E_USER_WARNING);
         }
 
@@ -335,7 +349,7 @@ class NativeSessionStorage implements SessionStorageInterface
         }
 
         $validOptions = array_flip(array(
-            'cache_limiter', 'cookie_domain', 'cookie_httponly',
+            'cache_limiter', 'cache_expire', 'cookie_domain', 'cookie_httponly',
             'cookie_lifetime', 'cookie_path', 'cookie_secure',
             'entropy_file', 'entropy_length', 'gc_divisor',
             'gc_maxlifetime', 'gc_probability', 'hash_bits_per_character',
@@ -363,7 +377,7 @@ class NativeSessionStorage implements SessionStorageInterface
      *     ini_set('session.save_handler', 'files');
      *     ini_set('session.save_path', '/tmp');
      *
-     * or pass in a NativeSessionHandler instance which configures session.save_handler in the
+     * or pass in a \SessionHandler instance which configures session.save_handler in the
      * constructor, for a template see NativeFileSessionHandler or use handlers in
      * composer package drak/native-session
      *
@@ -372,24 +386,23 @@ class NativeSessionStorage implements SessionStorageInterface
      * @see http://php.net/sessionhandler
      * @see http://github.com/drak/NativeSession
      *
-     * @param AbstractProxy|NativeSessionHandler|\SessionHandlerInterface|null $saveHandler
+     * @param \SessionHandlerInterface|null $saveHandler
      *
      * @throws \InvalidArgumentException
      */
     public function setSaveHandler($saveHandler = null)
     {
         if (!$saveHandler instanceof AbstractProxy &&
-            !$saveHandler instanceof NativeSessionHandler &&
             !$saveHandler instanceof \SessionHandlerInterface &&
             null !== $saveHandler) {
-            throw new \InvalidArgumentException('Must be instance of AbstractProxy or NativeSessionHandler; implement \SessionHandlerInterface; or be null.');
+            throw new \InvalidArgumentException('Must be instance of AbstractProxy; implement \SessionHandlerInterface; or be null.');
         }
 
         // Wrap $saveHandler in proxy and prevent double wrapping of proxy
         if (!$saveHandler instanceof AbstractProxy && $saveHandler instanceof \SessionHandlerInterface) {
             $saveHandler = new SessionHandlerProxy($saveHandler);
         } elseif (!$saveHandler instanceof AbstractProxy) {
-            $saveHandler = new SessionHandlerProxy(new \SessionHandler());
+            $saveHandler = new SessionHandlerProxy(new StrictSessionHandler(new \SessionHandler()));
         }
         $this->saveHandler = $saveHandler;
 
@@ -397,7 +410,9 @@ class NativeSessionStorage implements SessionStorageInterface
             return;
         }
 
-        if ($this->saveHandler instanceof \SessionHandlerInterface) {
+        if ($this->saveHandler instanceof SessionHandlerProxy) {
+            session_set_save_handler($this->saveHandler->getHandler(), false);
+        } elseif ($this->saveHandler instanceof \SessionHandlerInterface) {
             session_set_save_handler($this->saveHandler, false);
         }
     }
diff --git a/vendor/symfony/http-foundation/Session/Storage/PhpBridgeSessionStorage.php b/vendor/symfony/http-foundation/Session/Storage/PhpBridgeSessionStorage.php
index 9420d086ca..662ed5015a 100644
--- a/vendor/symfony/http-foundation/Session/Storage/PhpBridgeSessionStorage.php
+++ b/vendor/symfony/http-foundation/Session/Storage/PhpBridgeSessionStorage.php
@@ -11,9 +11,6 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage;
 
-use Symfony\Component\HttpFoundation\Session\Storage\Proxy\AbstractProxy;
-use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler;
-
 /**
  * Allows session to be started by PHP and managed by Symfony.
  *
@@ -22,8 +19,8 @@ use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandle
 class PhpBridgeSessionStorage extends NativeSessionStorage
 {
     /**
-     * @param AbstractProxy|NativeSessionHandler|\SessionHandlerInterface|null $handler
-     * @param MetadataBag                                                      $metaBag MetadataBag
+     * @param \SessionHandlerInterface|null $handler
+     * @param MetadataBag                   $metaBag MetadataBag
      */
     public function __construct($handler = null, MetadataBag $metaBag = null)
     {
diff --git a/vendor/symfony/http-foundation/Session/Storage/Proxy/AbstractProxy.php b/vendor/symfony/http-foundation/Session/Storage/Proxy/AbstractProxy.php
index a7478656d6..09c92483c7 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Proxy/AbstractProxy.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Proxy/AbstractProxy.php
@@ -12,8 +12,6 @@
 namespace Symfony\Component\HttpFoundation\Session\Storage\Proxy;
 
 /**
- * AbstractProxy.
- *
  * @author Drak <drak@zikula.org>
  */
 abstract class AbstractProxy
diff --git a/vendor/symfony/http-foundation/Session/Storage/Proxy/NativeProxy.php b/vendor/symfony/http-foundation/Session/Storage/Proxy/NativeProxy.php
index a0f48c1e27..460abe15c3 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Proxy/NativeProxy.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Proxy/NativeProxy.php
@@ -11,9 +11,13 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Proxy;
 
+@trigger_error('The '.__NAMESPACE__.'\NativeProxy class is deprecated since version 3.4 and will be removed in 4.0. Use your session handler implementation directly.', E_USER_DEPRECATED);
+
 /**
  * This proxy is built-in session handlers in PHP 5.3.x.
  *
+ * @deprecated since version 3.4, to be removed in 4.0. Use your session handler implementation directly.
+ *
  * @author Drak <drak@zikula.org>
  */
 class NativeProxy extends AbstractProxy
diff --git a/vendor/symfony/http-foundation/Session/Storage/Proxy/SessionHandlerProxy.php b/vendor/symfony/http-foundation/Session/Storage/Proxy/SessionHandlerProxy.php
index a96aae265c..53c1209a1c 100644
--- a/vendor/symfony/http-foundation/Session/Storage/Proxy/SessionHandlerProxy.php
+++ b/vendor/symfony/http-foundation/Session/Storage/Proxy/SessionHandlerProxy.php
@@ -18,9 +18,6 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
 {
     protected $handler;
 
-    /**
-     * @param \SessionHandlerInterface $handler
-     */
     public function __construct(\SessionHandlerInterface $handler)
     {
         $this->handler = $handler;
diff --git a/vendor/symfony/http-foundation/StreamedResponse.php b/vendor/symfony/http-foundation/StreamedResponse.php
index 257deea02f..92868d33e4 100644
--- a/vendor/symfony/http-foundation/StreamedResponse.php
+++ b/vendor/symfony/http-foundation/StreamedResponse.php
@@ -64,16 +64,22 @@ class StreamedResponse extends Response
      * Sets the PHP callback associated with this Response.
      *
      * @param callable $callback A valid PHP callback
+     *
+     * @return $this
      */
     public function setCallback(callable $callback)
     {
         $this->callback = $callback;
+
+        return $this;
     }
 
     /**
      * {@inheritdoc}
      *
      * This method only sends the headers once.
+     *
+     * @return $this
      */
     public function sendHeaders()
     {
@@ -90,6 +96,8 @@ class StreamedResponse extends Response
      * {@inheritdoc}
      *
      * This method only sends the content once.
+     *
+     * @return $this
      */
     public function sendContent()
     {
@@ -112,12 +120,16 @@ class StreamedResponse extends Response
      * {@inheritdoc}
      *
      * @throws \LogicException when the content is not null
+     *
+     * @return $this
      */
     public function setContent($content)
     {
         if (null !== $content) {
             throw new \LogicException('The content cannot be set on a StreamedResponse instance.');
         }
+
+        return $this;
     }
 
     /**
diff --git a/vendor/symfony/http-foundation/Tests/RequestTest.php b/vendor/symfony/http-foundation/Tests/RequestTest.php
index 3c123656cc..3c4a13acf4 100644
--- a/vendor/symfony/http-foundation/Tests/RequestTest.php
+++ b/vendor/symfony/http-foundation/Tests/RequestTest.php
@@ -2195,6 +2195,36 @@ class RequestTest extends TestCase
         Request::setTrustedHeaderName(Request::HEADER_CLIENT_PROTO, 'X_FORWARDED_PROTO');
     }
 
+    /**
+     * @dataProvider protocolVersionProvider
+     */
+    public function testProtocolVersion($serverProtocol, $trustedProxy, $via, $expected)
+    {
+        if ($trustedProxy) {
+            Request::setTrustedProxies(array('1.1.1.1'), -1);
+        }
+
+        $request = new Request();
+        $request->server->set('SERVER_PROTOCOL', $serverProtocol);
+        $request->server->set('REMOTE_ADDR', '1.1.1.1');
+        $request->headers->set('Via', $via);
+
+        $this->assertSame($expected, $request->getProtocolVersion());
+    }
+
+    public function protocolVersionProvider()
+    {
+        return array(
+            'untrusted without via' => array('HTTP/2.0', false, '', 'HTTP/2.0'),
+            'untrusted with via' => array('HTTP/2.0', false, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/2.0'),
+            'trusted without via' => array('HTTP/2.0', true, '', 'HTTP/2.0'),
+            'trusted with via' => array('HTTP/2.0', true, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'),
+            'trusted with via and protocol name' => array('HTTP/2.0', true, 'HTTP/1.0 fred, HTTP/1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'),
+            'trusted with broken via' => array('HTTP/2.0', true, 'HTTP/1^0 foo', 'HTTP/2.0'),
+            'trusted with partially-broken via' => array('HTTP/2.0', true, '1.0 fred, foo', 'HTTP/1.0'),
+        );
+    }
+
     public function nonstandardRequestsData()
     {
         return array(
diff --git a/vendor/symfony/http-foundation/Tests/ResponseHeaderBagTest.php b/vendor/symfony/http-foundation/Tests/ResponseHeaderBagTest.php
index 71a572362f..7ed6ccc070 100644
--- a/vendor/symfony/http-foundation/Tests/ResponseHeaderBagTest.php
+++ b/vendor/symfony/http-foundation/Tests/ResponseHeaderBagTest.php
@@ -20,48 +20,24 @@ use Symfony\Component\HttpFoundation\Cookie;
  */
 class ResponseHeaderBagTest extends TestCase
 {
-    /**
-     * @dataProvider provideAllPreserveCase
-     */
-    public function testAllPreserveCase($headers, $expected)
+    public function testAllPreserveCase()
     {
+        $headers = array(
+            'fOo' => 'BAR',
+            'ETag' => 'xyzzy',
+            'Content-MD5' => 'Q2hlY2sgSW50ZWdyaXR5IQ==',
+            'P3P' => 'CP="CAO PSA OUR"',
+            'WWW-Authenticate' => 'Basic realm="WallyWorld"',
+            'X-UA-Compatible' => 'IE=edge,chrome=1',
+            'X-XSS-Protection' => '1; mode=block',
+        );
+
         $bag = new ResponseHeaderBag($headers);
+        $allPreservedCase = $bag->allPreserveCase();
 
-        $this->assertEquals($expected, $bag->allPreserveCase(), '->allPreserveCase() gets all input keys in original case');
-    }
-
-    public function provideAllPreserveCase()
-    {
-        return array(
-            array(
-                array('fOo' => 'BAR'),
-                array('fOo' => array('BAR'), 'Cache-Control' => array('no-cache, private')),
-            ),
-            array(
-                array('ETag' => 'xyzzy'),
-                array('ETag' => array('xyzzy'), 'Cache-Control' => array('private, must-revalidate')),
-            ),
-            array(
-                array('Content-MD5' => 'Q2hlY2sgSW50ZWdyaXR5IQ=='),
-                array('Content-MD5' => array('Q2hlY2sgSW50ZWdyaXR5IQ=='), 'Cache-Control' => array('no-cache, private')),
-            ),
-            array(
-                array('P3P' => 'CP="CAO PSA OUR"'),
-                array('P3P' => array('CP="CAO PSA OUR"'), 'Cache-Control' => array('no-cache, private')),
-            ),
-            array(
-                array('WWW-Authenticate' => 'Basic realm="WallyWorld"'),
-                array('WWW-Authenticate' => array('Basic realm="WallyWorld"'), 'Cache-Control' => array('no-cache, private')),
-            ),
-            array(
-                array('X-UA-Compatible' => 'IE=edge,chrome=1'),
-                array('X-UA-Compatible' => array('IE=edge,chrome=1'), 'Cache-Control' => array('no-cache, private')),
-            ),
-            array(
-                array('X-XSS-Protection' => '1; mode=block'),
-                array('X-XSS-Protection' => array('1; mode=block'), 'Cache-Control' => array('no-cache, private')),
-            ),
-        );
+        foreach (array_keys($headers) as $headerName) {
+            $this->assertArrayHasKey($headerName, $allPreservedCase, '->allPreserveCase() gets all input keys in original case');
+        }
     }
 
     public function testCacheControlHeader()
@@ -343,6 +319,43 @@ class ResponseHeaderBagTest extends TestCase
         );
     }
 
+    public function testDateHeaderAddedOnCreation()
+    {
+        $now = time();
+
+        $bag = new ResponseHeaderBag();
+        $this->assertTrue($bag->has('Date'));
+
+        $this->assertEquals($now, $bag->getDate('Date')->getTimestamp());
+    }
+
+    public function testDateHeaderCanBeSetOnCreation()
+    {
+        $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
+        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+
+        $this->assertEquals($someDate, $bag->get('Date'));
+    }
+
+    public function testDateHeaderWillBeRecreatedWhenRemoved()
+    {
+        $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
+        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag->remove('Date');
+
+        // a (new) Date header is still present
+        $this->assertTrue($bag->has('Date'));
+        $this->assertNotEquals($someDate, $bag->get('Date'));
+    }
+
+    public function testDateHeaderWillBeRecreatedWhenHeadersAreReplaced()
+    {
+        $bag = new ResponseHeaderBag();
+        $bag->replace(array());
+
+        $this->assertTrue($bag->has('Date'));
+    }
+
     private function assertSetCookieHeader($expected, ResponseHeaderBag $actual)
     {
         $this->assertRegExp('#^Set-Cookie:\s+'.preg_quote($expected, '#').'$#m', str_replace("\r\n", "\n", (string) $actual));
diff --git a/vendor/symfony/http-foundation/Tests/ResponseTest.php b/vendor/symfony/http-foundation/Tests/ResponseTest.php
index 62b8c65259..9c5b34febf 100644
--- a/vendor/symfony/http-foundation/Tests/ResponseTest.php
+++ b/vendor/symfony/http-foundation/Tests/ResponseTest.php
@@ -610,6 +610,12 @@ class ResponseTest extends ResponseTestCase
         $response->setCache(array('private' => false));
         $this->assertTrue($response->headers->hasCacheControlDirective('public'));
         $this->assertFalse($response->headers->hasCacheControlDirective('private'));
+
+        $response->setCache(array('immutable' => true));
+        $this->assertTrue($response->headers->hasCacheControlDirective('immutable'));
+
+        $response->setCache(array('immutable' => false));
+        $this->assertFalse($response->headers->hasCacheControlDirective('immutable'));
     }
 
     public function testSendContent()
@@ -631,6 +637,22 @@ class ResponseTest extends ResponseTestCase
         $this->assertFalse($response->headers->hasCacheControlDirective('private'));
     }
 
+    public function testSetImmutable()
+    {
+        $response = new Response();
+        $response->setImmutable();
+
+        $this->assertTrue($response->headers->hasCacheControlDirective('immutable'));
+    }
+
+    public function testIsImmutable()
+    {
+        $response = new Response();
+        $response->setImmutable();
+
+        $this->assertTrue($response->isImmutable());
+    }
+
     public function testSetExpires()
     {
         $response = new Response();
diff --git a/vendor/symfony/http-foundation/Tests/Session/Flash/AutoExpireFlashBagTest.php b/vendor/symfony/http-foundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
index 18b71a5021..fa8626ab92 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
@@ -59,7 +59,7 @@ class AutoExpireFlashBagTest extends TestCase
 
     public function testGetStorageKey()
     {
-        $this->assertEquals('_sf2_flashes', $this->bag->getStorageKey());
+        $this->assertEquals('_symfony_flashes', $this->bag->getStorageKey());
         $attributeBag = new FlashBag('test');
         $this->assertEquals('test', $attributeBag->getStorageKey());
     }
@@ -150,4 +150,12 @@ class AutoExpireFlashBagTest extends TestCase
     {
         $this->assertEquals(array('notice' => array('A previous flash message')), $this->bag->clear());
     }
+
+    public function testDoNotRemoveTheNewFlashesWhenDisplayingTheExistingOnes()
+    {
+        $this->bag->add('success', 'Something');
+        $this->bag->all();
+
+        $this->assertEquals(array('new' => array('success' => array('Something')), 'display' => array()), $this->array);
+    }
 }
diff --git a/vendor/symfony/http-foundation/Tests/Session/Flash/FlashBagTest.php b/vendor/symfony/http-foundation/Tests/Session/Flash/FlashBagTest.php
index 1370dee68c..c4e75b1b18 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Flash/FlashBagTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Flash/FlashBagTest.php
@@ -54,7 +54,7 @@ class FlashBagTest extends TestCase
 
     public function testGetStorageKey()
     {
-        $this->assertEquals('_sf2_flashes', $this->bag->getStorageKey());
+        $this->assertEquals('_symfony_flashes', $this->bag->getStorageKey());
         $attributeBag = new FlashBag('test');
         $this->assertEquals('test', $attributeBag->getStorageKey());
     }
diff --git a/vendor/symfony/http-foundation/Tests/Session/SessionTest.php b/vendor/symfony/http-foundation/Tests/Session/SessionTest.php
index fa93507a41..41720e4b6f 100644
--- a/vendor/symfony/http-foundation/Tests/Session/SessionTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/SessionTest.php
@@ -221,4 +221,22 @@ class SessionTest extends TestCase
     {
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\MetadataBag', $this->session->getMetadataBag());
     }
+
+    public function testIsEmpty()
+    {
+        $this->assertTrue($this->session->isEmpty());
+
+        $this->session->set('hello', 'world');
+        $this->assertFalse($this->session->isEmpty());
+
+        $this->session->remove('hello');
+        $this->assertTrue($this->session->isEmpty());
+
+        $flash = $this->session->getFlashBag();
+        $flash->set('hello', 'world');
+        $this->assertFalse($this->session->isEmpty());
+
+        $flash->get('hello');
+        $this->assertTrue($this->session->isEmpty());
+    }
 }
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php
new file mode 100644
index 0000000000..3ac081e388
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php
@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Tests\Session\Storage\Handler;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @requires PHP 7.0
+ */
+class AbstractSessionHandlerTest extends TestCase
+{
+    private static $server;
+
+    public static function setUpBeforeClass()
+    {
+        $spec = array(
+            1 => array('file', '/dev/null', 'w'),
+            2 => array('file', '/dev/null', 'w'),
+        );
+        if (!self::$server = @proc_open('exec php -S localhost:8053', $spec, $pipes, __DIR__.'/Fixtures')) {
+            self::markTestSkipped('PHP server unable to start.');
+        }
+        sleep(1);
+    }
+
+    public static function tearDownAfterClass()
+    {
+        if (self::$server) {
+            proc_terminate(self::$server);
+            proc_close(self::$server);
+        }
+    }
+
+    /**
+     * @dataProvider provideSession
+     */
+    public function testSession($fixture)
+    {
+        $context = array('http' => array('header' => "Cookie: sid=123abc\r\n"));
+        $context = stream_context_create($context);
+        $result = file_get_contents(sprintf('http://localhost:8053/%s.php', $fixture), false, $context);
+
+        $this->assertStringEqualsFile(__DIR__.sprintf('/Fixtures/%s.expected', $fixture), $result);
+    }
+
+    public function provideSession()
+    {
+        foreach (glob(__DIR__.'/Fixtures/*.php') as $file) {
+            yield array(pathinfo($file, PATHINFO_FILENAME));
+        }
+    }
+}
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/common.inc b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/common.inc
new file mode 100644
index 0000000000..7a064c7f3f
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/common.inc
@@ -0,0 +1,151 @@
+<?php
+
+use Symfony\Component\HttpFoundation\Session\Storage\Handler\AbstractSessionHandler;
+
+$parent = __DIR__;
+while (!@file_exists($parent.'/vendor/autoload.php')) {
+    if (!@file_exists($parent)) {
+        // open_basedir restriction in effect
+        break;
+    }
+    if ($parent === dirname($parent)) {
+        echo "vendor/autoload.php not found\n";
+        exit(1);
+    }
+
+    $parent = dirname($parent);
+}
+
+require $parent.'/vendor/autoload.php';
+
+error_reporting(-1);
+ini_set('html_errors', 0);
+ini_set('display_errors', 1);
+ini_set('session.gc_probability', 0);
+ini_set('session.serialize_handler', 'php');
+ini_set('session.cookie_lifetime', 0);
+ini_set('session.cookie_domain', '');
+ini_set('session.cookie_secure', '');
+ini_set('session.cookie_httponly', '');
+ini_set('session.use_cookies', 1);
+ini_set('session.use_only_cookies', 1);
+ini_set('session.cache_expire', 180);
+ini_set('session.cookie_path', '/');
+ini_set('session.cookie_domain', '');
+ini_set('session.cookie_secure', 1);
+ini_set('session.cookie_httponly', 1);
+ini_set('session.use_strict_mode', 1);
+ini_set('session.lazy_write', 1);
+ini_set('session.name', 'sid');
+ini_set('session.save_path', __DIR__);
+ini_set('session.cache_limiter', '');
+
+header_remove('X-Powered-By');
+header('Content-Type: text/plain; charset=utf-8');
+
+register_shutdown_function(function () {
+    echo "\n";
+    session_write_close();
+    print_r(headers_list());
+    echo "shutdown\n";
+});
+ob_start();
+
+class TestSessionHandler extends AbstractSessionHandler
+{
+    private $data;
+
+    public function __construct($data = '')
+    {
+        $this->data = $data;
+    }
+
+    public function open($path, $name)
+    {
+        echo __FUNCTION__, "\n";
+
+        return parent::open($path, $name);
+    }
+
+    public function validateId($sessionId)
+    {
+        echo __FUNCTION__, "\n";
+
+        return parent::validateId($sessionId);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function read($sessionId)
+    {
+        echo __FUNCTION__, "\n";
+
+        return parent::read($sessionId);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function updateTimestamp($sessionId, $data)
+    {
+        echo __FUNCTION__, "\n";
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function write($sessionId, $data)
+    {
+        echo __FUNCTION__, "\n";
+
+        return parent::write($sessionId, $data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function destroy($sessionId)
+    {
+        echo __FUNCTION__, "\n";
+
+        return parent::destroy($sessionId);
+    }
+
+    public function close()
+    {
+        echo __FUNCTION__, "\n";
+
+        return true;
+    }
+
+    public function gc($maxLifetime)
+    {
+        echo __FUNCTION__, "\n";
+
+        return true;
+    }
+
+    protected function doRead($sessionId)
+    {
+        echo __FUNCTION__.': ', $this->data, "\n";
+
+        return $this->data;
+    }
+
+    protected function doWrite($sessionId, $data)
+    {
+        echo __FUNCTION__.': ', $data, "\n";
+
+        return true;
+    }
+
+    protected function doDestroy($sessionId)
+    {
+        echo __FUNCTION__, "\n";
+
+        return true;
+    }
+}
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/empty_destroys.expected b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/empty_destroys.expected
new file mode 100644
index 0000000000..8203714740
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/empty_destroys.expected
@@ -0,0 +1,17 @@
+open
+validateId
+read
+doRead: abc|i:123;
+read
+
+write
+destroy
+doDestroy
+close
+Array
+(
+    [0] => Content-Type: text/plain; charset=utf-8
+    [1] => Cache-Control: max-age=10800, private, must-revalidate
+    [2] => Set-Cookie: sid=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; Max-Age=0; path=/; secure; HttpOnly
+)
+shutdown
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/empty_destroys.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/empty_destroys.php
new file mode 100644
index 0000000000..3cfc1250ad
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/empty_destroys.php
@@ -0,0 +1,8 @@
+<?php
+
+require __DIR__.'/common.inc';
+
+session_set_save_handler(new TestSessionHandler('abc|i:123;'), false);
+session_start();
+
+unset($_SESSION['abc']);
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/read_only.expected b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/read_only.expected
new file mode 100644
index 0000000000..587adaf158
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/read_only.expected
@@ -0,0 +1,14 @@
+open
+validateId
+read
+doRead: abc|i:123;
+read
+123
+updateTimestamp
+close
+Array
+(
+    [0] => Content-Type: text/plain; charset=utf-8
+    [1] => Cache-Control: max-age=10800, private, must-revalidate
+)
+shutdown
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/read_only.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/read_only.php
new file mode 100644
index 0000000000..3e62fb9ecb
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/read_only.php
@@ -0,0 +1,8 @@
+<?php
+
+require __DIR__.'/common.inc';
+
+session_set_save_handler(new TestSessionHandler('abc|i:123;'), false);
+session_start();
+
+echo $_SESSION['abc'];
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/regenerate.expected b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/regenerate.expected
new file mode 100644
index 0000000000..baa5f2f6f5
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/regenerate.expected
@@ -0,0 +1,24 @@
+open
+validateId
+read
+doRead: abc|i:123;
+read
+destroy
+doDestroy
+close
+open
+validateId
+read
+doRead: abc|i:123;
+read
+
+write
+doWrite: abc|i:123;
+close
+Array
+(
+    [0] => Content-Type: text/plain; charset=utf-8
+    [1] => Cache-Control: max-age=10800, private, must-revalidate
+    [2] => Set-Cookie: sid=random_session_id; path=/; secure; HttpOnly
+)
+shutdown
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/regenerate.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/regenerate.php
new file mode 100644
index 0000000000..a0f635c871
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/regenerate.php
@@ -0,0 +1,10 @@
+<?php
+
+require __DIR__.'/common.inc';
+
+session_set_save_handler(new TestSessionHandler('abc|i:123;'), false);
+session_start();
+
+session_regenerate_id(true);
+
+ob_start(function ($buffer) { return str_replace(session_id(), 'random_session_id', $buffer); });
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/storage.expected b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/storage.expected
new file mode 100644
index 0000000000..4533a10a1f
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/storage.expected
@@ -0,0 +1,20 @@
+open
+validateId
+read
+doRead: 
+read
+Array
+(
+    [0] => bar
+)
+$_SESSION is not empty
+write
+destroy
+close
+$_SESSION is not empty
+Array
+(
+    [0] => Content-Type: text/plain; charset=utf-8
+    [1] => Cache-Control: max-age=0, private, must-revalidate
+)
+shutdown
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/storage.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/storage.php
new file mode 100644
index 0000000000..96dca3c2c0
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/storage.php
@@ -0,0 +1,24 @@
+<?php
+
+require __DIR__.'/common.inc';
+
+use Symfony\Component\HttpFoundation\Session\Flash\FlashBag;
+use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage;
+
+$storage = new NativeSessionStorage();
+$storage->setSaveHandler(new TestSessionHandler());
+$flash = new FlashBag();
+$storage->registerBag($flash);
+$storage->start();
+
+$flash->add('foo', 'bar');
+
+print_r($flash->get('foo'));
+echo empty($_SESSION) ? '$_SESSION is empty' : '$_SESSION is not empty';
+echo "\n";
+
+$storage->save();
+
+echo empty($_SESSION) ? '$_SESSION is empty' : '$_SESSION is not empty';
+
+ob_start(function ($buffer) { return str_replace(session_id(), 'random_session_id', $buffer); });
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/with_cookie.expected b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/with_cookie.expected
new file mode 100644
index 0000000000..33da0a5be6
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/with_cookie.expected
@@ -0,0 +1,15 @@
+open
+validateId
+read
+doRead: abc|i:123;
+read
+
+updateTimestamp
+close
+Array
+(
+    [0] => Content-Type: text/plain; charset=utf-8
+    [1] => Cache-Control: max-age=10800, private, must-revalidate
+    [2] => Set-Cookie: abc=def
+)
+shutdown
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/with_cookie.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/with_cookie.php
new file mode 100644
index 0000000000..ffb5b20a37
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/Fixtures/with_cookie.php
@@ -0,0 +1,8 @@
+<?php
+
+require __DIR__.'/common.inc';
+
+session_set_save_handler(new TestSessionHandler('abc|i:123;'), false);
+session_start();
+
+setcookie('abc', 'def');
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php
index 75be18beff..dda43c805b 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php
@@ -17,6 +17,7 @@ use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcacheSessionHand
 /**
  * @requires extension memcache
  * @group time-sensitive
+ * @group legacy
  */
 class MemcacheSessionHandlerTest extends TestCase
 {
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
index b5fee8eba4..da051096c8 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
@@ -17,6 +17,7 @@ use Symfony\Component\HttpFoundation\Session\Storage\Handler\MongoDbSessionHandl
 /**
  * @author Markus Bachmann <markus.bachmann@bachi.biz>
  * @group time-sensitive
+ * @group legacy
  */
 class MongoDbSessionHandlerTest extends TestCase
 {
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php
index 5486b2d655..b5af1df36c 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php
@@ -21,9 +21,13 @@ use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandle
  *
  * @runTestsInSeparateProcesses
  * @preserveGlobalState disabled
+ * @group legacy
  */
 class NativeSessionHandlerTest extends TestCase
 {
+    /**
+     * @expectedDeprecation The Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler class is deprecated since version 3.4 and will be removed in 4.0. Use the \SessionHandler class instead.
+     */
     public function testConstruct()
     {
         $handler = new NativeSessionHandler();
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php
index a9884c1c92..a0d7529f06 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php
@@ -160,6 +160,9 @@ class PdoSessionHandlerTest extends TestCase
         if (defined('HHVM_VERSION')) {
             $this->markTestSkipped('PHPUnit_MockObject cannot mock the PDOStatement class on HHVM. See https://github.com/sebastianbergmann/phpunit-mock-objects/pull/289');
         }
+        if (ini_get('session.use_strict_mode')) {
+            $this->markTestSkipped('Strict mode needs no locking for new sessions.');
+        }
 
         $pdo = new MockPdo('pgsql');
         $selectStmt = $this->getMockBuilder('PDOStatement')->getMock();
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
new file mode 100644
index 0000000000..9d2c1949f3
--- /dev/null
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
@@ -0,0 +1,189 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Tests\Session\Storage\Handler;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Session\Storage\Handler\AbstractSessionHandler;
+use Symfony\Component\HttpFoundation\Session\Storage\Handler\StrictSessionHandler;
+
+class StrictSessionHandlerTest extends TestCase
+{
+    public function testOpen()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('open')
+            ->with('path', 'name')->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertInstanceof('SessionUpdateTimestampHandlerInterface', $proxy);
+        $this->assertInstanceof(AbstractSessionHandler::class, $proxy);
+        $this->assertTrue($proxy->open('path', 'name'));
+    }
+
+    public function testCloseSession()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('close')
+            ->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->close());
+    }
+
+    public function testValidateIdOK()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('data');
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->validateId('id'));
+    }
+
+    public function testValidateIdKO()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('');
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertFalse($proxy->validateId('id'));
+    }
+
+    public function testRead()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('data');
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertSame('data', $proxy->read('id'));
+    }
+
+    public function testReadWithValidateIdOK()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('data');
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->validateId('id'));
+        $this->assertSame('data', $proxy->read('id'));
+    }
+
+    public function testReadWithValidateIdMismatch()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->exactly(2))->method('read')
+            ->withConsecutive(array('id1'), array('id2'))
+            ->will($this->onConsecutiveCalls('data1', 'data2'));
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->validateId('id1'));
+        $this->assertSame('data2', $proxy->read('id2'));
+    }
+
+    public function testUpdateTimestamp()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('write')
+            ->with('id', 'data')->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->updateTimestamp('id', 'data'));
+    }
+
+    public function testWrite()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('write')
+            ->with('id', 'data')->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->write('id', 'data'));
+    }
+
+    public function testWriteEmptyNewSession()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('');
+        $handler->expects($this->never())->method('write');
+        $handler->expects($this->never())->method('destroy');
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertFalse($proxy->validateId('id'));
+        $this->assertSame('', $proxy->read('id'));
+        $this->assertTrue($proxy->write('id', ''));
+    }
+
+    public function testWriteEmptyExistingSession()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('data');
+        $handler->expects($this->never())->method('write');
+        $handler->expects($this->once())->method('destroy')->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertSame('data', $proxy->read('id'));
+        $this->assertTrue($proxy->write('id', ''));
+    }
+
+    public function testDestroy()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('destroy')
+            ->with('id')->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->destroy('id'));
+    }
+
+    public function testDestroyNewSession()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('');
+        $handler->expects($this->never())->method('destroy');
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertSame('', $proxy->read('id'));
+        $this->assertTrue($proxy->destroy('id'));
+    }
+
+    public function testDestroyNonEmptyNewSession()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('read')
+            ->with('id')->willReturn('');
+        $handler->expects($this->once())->method('write')
+            ->with('id', 'data')->willReturn(true);
+        $handler->expects($this->once())->method('destroy')
+            ->with('id')->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertSame('', $proxy->read('id'));
+        $this->assertTrue($proxy->write('id', 'data'));
+        $this->assertTrue($proxy->destroy('id'));
+    }
+
+    public function testGc()
+    {
+        $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
+        $handler->expects($this->once())->method('gc')
+            ->with(123)->willReturn(true);
+        $proxy = new StrictSessionHandler($handler);
+
+        $this->assertTrue($proxy->gc(123));
+    }
+}
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php
index 5e41a4743e..898a7d11a5 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php
@@ -16,6 +16,8 @@ use Symfony\Component\HttpFoundation\Session\Storage\Handler\WriteCheckSessionHa
 
 /**
  * @author Adrien Brault <adrien.brault@gmail.com>
+ *
+ * @group legacy
  */
 class WriteCheckSessionHandlerTest extends TestCase
 {
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/NativeSessionStorageTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/NativeSessionStorageTest.php
index e0b34647ed..f1442e8edb 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/NativeSessionStorageTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/NativeSessionStorageTest.php
@@ -14,7 +14,7 @@ namespace Symfony\Component\HttpFoundation\Tests\Session\Storage;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Session\Attribute\AttributeBag;
 use Symfony\Component\HttpFoundation\Session\Flash\FlashBag;
-use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler;
+use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeFileSessionHandler;
 use Symfony\Component\HttpFoundation\Session\Storage\Handler\NullSessionHandler;
 use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage;
 use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;
@@ -199,9 +199,9 @@ class NativeSessionStorageTest extends TestCase
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
         $storage->setSaveHandler(null);
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
-        $storage->setSaveHandler(new SessionHandlerProxy(new NativeSessionHandler()));
+        $storage->setSaveHandler(new SessionHandlerProxy(new NativeFileSessionHandler()));
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
-        $storage->setSaveHandler(new NativeSessionHandler());
+        $storage->setSaveHandler(new NativeFileSessionHandler());
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
         $storage->setSaveHandler(new SessionHandlerProxy(new NullSessionHandler()));
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/AbstractProxyTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/AbstractProxyTest.php
index ef1da130a2..cbb291f19f 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/AbstractProxyTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/AbstractProxyTest.php
@@ -13,39 +13,7 @@ namespace Symfony\Component\HttpFoundation\Tests\Session\Storage\Proxy;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Session\Storage\Proxy\AbstractProxy;
-
-// Note until PHPUnit_Mock_Objects 1.2 is released you cannot mock abstracts due to
-// https://github.com/sebastianbergmann/phpunit-mock-objects/issues/73
-class ConcreteProxy extends AbstractProxy
-{
-}
-
-class ConcreteSessionHandlerInterfaceProxy extends AbstractProxy implements \SessionHandlerInterface
-{
-    public function open($savePath, $sessionName)
-    {
-    }
-
-    public function close()
-    {
-    }
-
-    public function read($id)
-    {
-    }
-
-    public function write($id, $data)
-    {
-    }
-
-    public function destroy($id)
-    {
-    }
-
-    public function gc($maxlifetime)
-    {
-    }
-}
+use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;
 
 /**
  * Test class for AbstractProxy.
@@ -61,7 +29,7 @@ class AbstractProxyTest extends TestCase
 
     protected function setUp()
     {
-        $this->proxy = new ConcreteProxy();
+        $this->proxy = $this->getMockForAbstractClass(AbstractProxy::class);
     }
 
     protected function tearDown()
@@ -77,7 +45,7 @@ class AbstractProxyTest extends TestCase
     public function testIsSessionHandlerInterface()
     {
         $this->assertFalse($this->proxy->isSessionHandlerInterface());
-        $sh = new ConcreteSessionHandlerInterfaceProxy();
+        $sh = new SessionHandlerProxy(new \SessionHandler());
         $this->assertTrue($sh->isSessionHandlerInterface());
     }
 
diff --git a/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/NativeProxyTest.php b/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/NativeProxyTest.php
index 8ec3053441..ed4fee6bfe 100644
--- a/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/NativeProxyTest.php
+++ b/vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/NativeProxyTest.php
@@ -17,6 +17,8 @@ use Symfony\Component\HttpFoundation\Session\Storage\Proxy\NativeProxy;
 /**
  * Test class for NativeProxy.
  *
+ * @group legacy
+ *
  * @author Drak <drak@zikula.org>
  */
 class NativeProxyTest extends TestCase
diff --git a/vendor/symfony/http-foundation/composer.json b/vendor/symfony/http-foundation/composer.json
index a964975ecb..f6c6f2e623 100644
--- a/vendor/symfony/http-foundation/composer.json
+++ b/vendor/symfony/http-foundation/composer.json
@@ -17,10 +17,11 @@
     ],
     "require": {
         "php": "^5.5.9|>=7.0.8",
-        "symfony/polyfill-mbstring": "~1.1"
+        "symfony/polyfill-mbstring": "~1.1",
+        "symfony/polyfill-php70": "~1.6"
     },
     "require-dev": {
-        "symfony/expression-language": "~2.8|~3.0"
+        "symfony/expression-language": "~2.8|~3.0|~4.0"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\HttpFoundation\\": "" },
@@ -31,7 +32,7 @@
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "3.3-dev"
+            "dev-master": "3.4-dev"
         }
     }
 }
diff --git a/vendor/symfony/polyfill-php70/LICENSE b/vendor/symfony/polyfill-php70/LICENSE
new file mode 100644
index 0000000000..39fa189d2b
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2014-2016 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/vendor/symfony/polyfill-php70/Php70.php b/vendor/symfony/polyfill-php70/Php70.php
new file mode 100644
index 0000000000..e7ff0b26d8
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Php70.php
@@ -0,0 +1,74 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Polyfill\Php70;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+final class Php70
+{
+    public static function intdiv($dividend, $divisor)
+    {
+        $dividend = self::intArg($dividend, __FUNCTION__, 1);
+        $divisor = self::intArg($divisor, __FUNCTION__, 2);
+
+        if (0 === $divisor) {
+            throw new \DivisionByZeroError('Division by zero');
+        }
+        if (-1 === $divisor && ~PHP_INT_MAX === $dividend) {
+            throw new \ArithmeticError('Division of PHP_INT_MIN by -1 is not an integer');
+        }
+
+        return ($dividend - ($dividend % $divisor)) / $divisor;
+    }
+
+    public static function preg_replace_callback_array(array $patterns, $subject, $limit = -1, &$count = 0)
+    {
+        $count = 0;
+        $result = ''.$subject;
+        if (0 === $limit = self::intArg($limit, __FUNCTION__, 3)) {
+            return $result;
+        }
+
+        foreach ($patterns as $pattern => $callback) {
+            $result = preg_replace_callback($pattern, $callback, $result, $limit, $c);
+            $count += $c;
+        }
+
+        return $result;
+    }
+
+    public static function error_clear_last()
+    {
+        static $handler;
+        if (!$handler) {
+             $handler = function() { return false; };
+        }
+        set_error_handler($handler);
+        @trigger_error('');
+        restore_error_handler();
+    }
+
+    public static function intArg($value, $caller, $pos)
+    {
+        if (is_int($value)) {
+            return $value;
+        }
+        if (!is_numeric($value) || PHP_INT_MAX <= ($value += 0) || ~PHP_INT_MAX >= $value) {
+            throw new \TypeError(sprintf('%s() expects parameter %d to be integer, %s given', $caller, $pos, gettype($value)));
+        }
+
+        return (int) $value;
+    }
+}
diff --git a/vendor/symfony/polyfill-php70/README.md b/vendor/symfony/polyfill-php70/README.md
new file mode 100644
index 0000000000..04988c6f93
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/README.md
@@ -0,0 +1,28 @@
+Symfony Polyfill / Php70
+========================
+
+This component provides features unavailable in releases prior to PHP 7.0:
+
+- [`intdiv`](http://php.net/intdiv)
+- [`preg_replace_callback_array`](http://php.net/preg_replace_callback_array)
+- [`error_clear_last`](http://php.net/error_clear_last)
+- `random_bytes` and `random_int` (from [paragonie/random_compat](https://github.com/paragonie/random_compat))
+- [`*Error` throwable classes](http://php.net/Error)
+- [`PHP_INT_MIN`](http://php.net/manual/en/reserved.constants.php#constant.php-int-min)
+- `SessionUpdateTimestampHandlerInterface`
+
+More information can be found in the
+[main Polyfill README](https://github.com/symfony/polyfill/blob/master/README.md).
+
+Compatibility notes
+===================
+
+To write portable code between PHP5 and PHP7, some care must be taken:
+- `\*Error` exceptions must be caught before `\Exception`;
+- after calling `error_clear_last()`, the result of `$e = error_get_last()` must be
+  verified using `isset($e['message'][0])` instead of `null !== $e`.
+
+License
+=======
+
+This library is released under the [MIT license](LICENSE).
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/ArithmeticError.php b/vendor/symfony/polyfill-php70/Resources/stubs/ArithmeticError.php
new file mode 100644
index 0000000000..6819124462
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/ArithmeticError.php
@@ -0,0 +1,5 @@
+<?php
+
+class ArithmeticError extends Error
+{
+}
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/AssertionError.php b/vendor/symfony/polyfill-php70/Resources/stubs/AssertionError.php
new file mode 100644
index 0000000000..acb125080f
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/AssertionError.php
@@ -0,0 +1,5 @@
+<?php
+
+class AssertionError extends Error
+{
+}
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/DivisionByZeroError.php b/vendor/symfony/polyfill-php70/Resources/stubs/DivisionByZeroError.php
new file mode 100644
index 0000000000..c99278b31d
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/DivisionByZeroError.php
@@ -0,0 +1,5 @@
+<?php
+
+class DivisionByZeroError extends Error
+{
+}
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/Error.php b/vendor/symfony/polyfill-php70/Resources/stubs/Error.php
new file mode 100644
index 0000000000..405847fb89
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/Error.php
@@ -0,0 +1,5 @@
+<?php
+
+class Error extends Exception
+{
+}
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/ParseError.php b/vendor/symfony/polyfill-php70/Resources/stubs/ParseError.php
new file mode 100644
index 0000000000..2dd447dd43
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/ParseError.php
@@ -0,0 +1,5 @@
+<?php
+
+class ParseError extends Error
+{
+}
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/SessionUpdateTimestampHandlerInterface.php b/vendor/symfony/polyfill-php70/Resources/stubs/SessionUpdateTimestampHandlerInterface.php
new file mode 100644
index 0000000000..0cc02c8f92
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/SessionUpdateTimestampHandlerInterface.php
@@ -0,0 +1,23 @@
+<?php
+
+interface SessionUpdateTimestampHandlerInterface
+{
+    /**
+     * Checks if a session identifier already exists or not.
+     *
+     * @param string $key
+     *
+     * @return bool
+     */
+    public function validateId($key);
+
+    /**
+     * Updates the timestamp of a session when its data didn't change.
+     *
+     * @param string $key
+     * @param string $val
+     *
+     * @return bool
+     */
+    public function updateTimestamp($key, $val);
+}
diff --git a/vendor/symfony/polyfill-php70/Resources/stubs/TypeError.php b/vendor/symfony/polyfill-php70/Resources/stubs/TypeError.php
new file mode 100644
index 0000000000..2bed1b4831
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/Resources/stubs/TypeError.php
@@ -0,0 +1,5 @@
+<?php
+
+class TypeError extends Error
+{
+}
diff --git a/vendor/symfony/polyfill-php70/bootstrap.php b/vendor/symfony/polyfill-php70/bootstrap.php
new file mode 100644
index 0000000000..445c39839c
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/bootstrap.php
@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Symfony\Polyfill\Php70 as p;
+
+if (PHP_VERSION_ID < 70000) {
+    if (!defined('PHP_INT_MIN')) {
+        define('PHP_INT_MIN', ~PHP_INT_MAX);
+    }
+    if (!function_exists('intdiv')) {
+        function intdiv($dividend, $divisor) { return p\Php70::intdiv($dividend, $divisor); }
+    }
+    if (!function_exists('preg_replace_callback_array')) {
+        function preg_replace_callback_array(array $patterns, $subject, $limit = -1, &$count = 0) { return p\Php70::preg_replace_callback_array($patterns, $subject, $limit, $count); }
+    }
+    if (!function_exists('error_clear_last')) {
+        function error_clear_last() { return p\Php70::error_clear_last(); }
+    }
+}
diff --git a/vendor/symfony/polyfill-php70/composer.json b/vendor/symfony/polyfill-php70/composer.json
new file mode 100644
index 0000000000..1d0b8fe208
--- /dev/null
+++ b/vendor/symfony/polyfill-php70/composer.json
@@ -0,0 +1,33 @@
+{
+    "name": "symfony/polyfill-php70",
+    "type": "library",
+    "description": "Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions",
+    "keywords": ["polyfill", "shim", "compatibility", "portable"],
+    "homepage": "https://symfony.com",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Nicolas Grekas",
+            "email": "p@tchwork.com"
+        },
+        {
+            "name": "Symfony Community",
+            "homepage": "https://symfony.com/contributors"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.3",
+        "paragonie/random_compat": "~1.0|~2.0"
+    },
+    "autoload": {
+        "psr-4": { "Symfony\\Polyfill\\Php70\\": "" },
+        "files": [ "bootstrap.php" ],
+        "classmap": [ "Resources/stubs" ]
+    },
+    "minimum-stability": "dev",
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.6-dev"
+        }
+    }
+}
diff --git a/vendor/tecnickcom/tcpdf/CHANGELOG.TXT b/vendor/tecnickcom/tcpdf/CHANGELOG.TXT
index 31b587b284..64c3d47adc 100644
--- a/vendor/tecnickcom/tcpdf/CHANGELOG.TXT
+++ b/vendor/tecnickcom/tcpdf/CHANGELOG.TXT
@@ -1,3 +1,6 @@
+6.2.13 (2016-06-10)
+	- IMPORTANT: A new version of this library is under development at https://github.com/tecnickcom/tc-lib-pdf and as a consequence this version will not receive any additional development or support. This version should be considered obsolete, new projects should use the new version as soon it will become stable.
+
 6.2.12 (2015-09-12)
 	- fix composer package name to tecnickcom/tcpdf
 
diff --git a/vendor/tecnickcom/tcpdf/README.TXT b/vendor/tecnickcom/tcpdf/README.TXT
deleted file mode 100644
index 2061fa7a16..0000000000
--- a/vendor/tecnickcom/tcpdf/README.TXT
+++ /dev/null
@@ -1,117 +0,0 @@
-TCPDF - README
-============================================================
-
-I WISH TO IMPROVE AND EXPAND TCPDF BUT I NEED YOUR SUPPORT.
-PLEASE MAKE A DONATION:
-http://sourceforge.net/donate/index.php?group_id=128076
-or via PayPal at paypal@tecnick.com
-
-------------------------------------------------------------
-
-Name: TCPDF
-Version: 6.2.12
-Release date: 2015-09-12
-Author:	Nicola Asuni
-
-Copyright (c) 2002-2015:
-	Nicola Asuni
-	Tecnick.com LTD
-	www.tecnick.com
-
-URLs:
-	http://www.tcpdf.org
-	http://www.sourceforge.net/projects/tcpdf
-	https://github.com/tecnickcom/TCPDF
-
-Description:
-	TCPDF is a PHP class for generating PDF files on-the-fly without requiring external extensions.
-	This library includes also a class to extract data from existing PDF documents and
-	classes to generate 1D and 2D barcodes in various formats.
-
-Main Features:
-    * no external libraries are required for the basic functions;
-    * all standard page formats, custom page formats, custom margins and units of measure;
-    * UTF-8 Unicode and Right-To-Left languages;
-    * TrueTypeUnicode, OpenTypeUnicode v1, TrueType, OpenType v1, Type1 and CID-0 fonts;
-    * font subsetting;
-    * methods to publish some XHTML + CSS code, Javascript and Forms;
-    * images, graphic (geometric figures) and transformation methods;
-    * supports JPEG, PNG and SVG images natively, all images supported by GD (GD, GD2, GD2PART, GIF, JPEG, PNG, BMP, XBM, XPM) and all images supported via ImagMagick (http://www.imagemagick.org/script/formats.php)
-    * 1D and 2D barcodes: CODE 39, ANSI MH10.8M-1983, USD-3, 3 of 9, CODE 93, USS-93, Standard 2 of 5, Interleaved 2 of 5, CODE 128 A/B/C, 2 and 5 Digits UPC-Based Extension, EAN 8, EAN 13, UPC-A, UPC-E, MSI, POSTNET, PLANET, RMS4CC (Royal Mail 4-state Customer Code), CBC (Customer Bar Code), KIX (Klant index - Customer index), Intelligent Mail Barcode, Onecode, USPS-B-3200, CODABAR, CODE 11, PHARMACODE, PHARMACODE TWO-TRACKS, Datamatrix, QR-Code, PDF417;
-    * JPEG and PNG ICC profiles, Grayscale, RGB, CMYK, Spot Colors and Transparencies;
-    * automatic page header and footer management;
-    * document encryption up to 256 bit and digital signature certifications;
-    * transactions to UNDO commands;
-    * PDF annotations, including links, text and file attachments;
-    * text rendering modes (fill, stroke and clipping);
-    * multiple columns mode;
-    * no-write page regions;
-    * bookmarks, named destinations and table of content;
-    * text hyphenation;
-    * text stretching and spacing (tracking);
-    * automatic page break, line break and text alignments including justification;
-    * automatic page numbering and page groups;
-    * move and delete pages;
-    * page compression (requires php-zlib extension);
-    * XOBject Templates;
-	* Layers and object visibility.
-	* PDF/A-1b support.
-
-Installation (full instructions on http:  www.tcpdf.org):
-	1. copy the folder on your Web server
-	2. set your installation path and other parameters on the config/tcpdf_config.php
-	3. call the examples/example_001.php page with your browser to see an example
-
-Source Code Documentation:
-	http://www.tcpdf.org
-
-Additional Documentation:
-	http://www.tcpdf.org
-
-License:
-	Copyright (C) 2002-2014  Nicola Asuni - Tecnick.com LTD
-
-	TCPDF is free software: you can redistribute it and/or modify it
-	under the terms of the GNU Lesser General Public License as
-	published by the Free Software Foundation, either version 3 of the
-	License, or (at your option) any later version.
-
-	TCPDF is distributed in the hope that it will be useful, but
-	WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-	See the GNU Lesser General Public License for more details.
-
-	You should have received a copy of the License
-	along with TCPDF. If not, see
-	<http://www.tecnick.com/pagefiles/tcpdf/LICENSE.TXT>.
-
-	See LICENSE.TXT file for more information.
-
-Third party fonts:
-
-	This library may include third party font files released with different licenses.
-	
-	All the PHP files on the fonts directory are subject to the general TCPDF license (GNU-LGPLv3),
-	they do not contain any binary data but just a description of the general properties of a particular font.
-	These files can be also generated on the fly using the font utilities and TCPDF methods.
-	
-	All the original binary TTF font files have been renamed for compatibility with TCPDF and compressed using the gzcompress PHP function that uses the ZLIB data format (.z files).
-	
-	The binary files (.z) that begins with the prefix "free" have been extracted from the GNU FreeFont collection (GNU-GPLv3).
-	The binary files (.z) that begins with the prefix "pdfa" have been derived from the GNU FreeFont, so they are subject to the same license.
-	For the details of Copyright, License and other information, please check the files inside the directory fonts/freefont-20120503
-	Link : http://www.gnu.org/software/freefont/
-	
-	The binary files (.z) that begins with the prefix "dejavu" have been extracted from the DejaVu fonts 2.33 (Bitstream) collection.
-	For the details of Copyright, License and other information, please check the files inside the directory fonts/dejavu-fonts-ttf-2.33
-	Link : http://dejavu-fonts.org
-	
-	The binary files (.z) that begins with the prefix "ae" have been extracted from the Arabeyes.org collection (GNU-GPLv2).
-	Link : http://projects.arabeyes.org/
-
-ICC profile:
-    TCPDF includes the sRGB.icc profile from the icc-profiles-free Debian package:
-    https://packages.debian.org/source/stable/icc-profiles-free
-
-
-============================================================
diff --git a/vendor/tecnickcom/tcpdf/README.md b/vendor/tecnickcom/tcpdf/README.md
new file mode 100644
index 0000000000..86db02ebe5
--- /dev/null
+++ b/vendor/tecnickcom/tcpdf/README.md
@@ -0,0 +1,84 @@
+# TCPDF
+*PHP PDF Library*
+
+[![Donate via PayPal](https://img.shields.io/badge/donate-paypal-87ceeb.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&currency_code=GBP&business=paypal@tecnick.com&item_name=donation%20for%20TCPDF%20project)
+*Please consider supporting this project by making a donation via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&currency_code=GBP&business=paypal@tecnick.com&item_name=donation%20for%20TCPDF%20project)*
+
+* **category**    Library
+* **author**      Nicola Asuni <info@tecnick.com>
+* **copyright**   2002-2016 Nicola Asuni - Tecnick.com LTD
+* **license**     http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
+* **link**        http://www.tcpdf.org
+* **source**      https://github.com/tecnickcom/TCPDF
+
+
+## IMPORTANT
+A new version of this library is under development at https://github.com/tecnickcom/tc-lib-pdf and as a consequence this version will not receive any additional development or support.
+This version should be considered obsolete, new projects should use the new version as soon it will become stable.
+
+
+
+## Description
+
+PHP library for generating PDF documents on-the-fly.
+
+### Main Features:
+* no external libraries are required for the basic functions;
+* all standard page formats, custom page formats, custom margins and units of measure;
+* UTF-8 Unicode and Right-To-Left languages;
+* TrueTypeUnicode, OpenTypeUnicode v1, TrueType, OpenType v1, Type1 and CID-0 fonts;
+* font subsetting;
+* methods to publish some XHTML + CSS code, Javascript and Forms;
+* images, graphic (geometric figures) and transformation methods;
+* supports JPEG, PNG and SVG images natively, all images supported by GD (GD, GD2, GD2PART, GIF, JPEG, PNG, BMP, XBM, XPM) and all images supported via ImagMagick (http://www.imagemagick.org/script/formats.php)
+* 1D and 2D barcodes: CODE 39, ANSI MH10.8M-1983, USD-3, 3 of 9, CODE 93, USS-93, Standard 2 of 5, Interleaved 2 of 5, CODE 128 A/B/C, 2 and 5 Digits UPC-Based Extension, EAN 8, EAN 13, UPC-A, UPC-E, MSI, POSTNET, PLANET, RMS4CC (Royal Mail 4-state Customer Code), CBC (Customer Bar Code), KIX (Klant index - Customer index), Intelligent Mail Barcode, Onecode, USPS-B-3200, CODABAR, CODE 11, PHARMACODE, PHARMACODE TWO-TRACKS, Datamatrix, QR-Code, PDF417;
+* JPEG and PNG ICC profiles, Grayscale, RGB, CMYK, Spot Colors and Transparencies;
+* automatic page header and footer management;
+* document encryption up to 256 bit and digital signature certifications;
+* transactions to UNDO commands;
+* PDF annotations, including links, text and file attachments;
+* text rendering modes (fill, stroke and clipping);
+* multiple columns mode;
+* no-write page regions;
+* bookmarks, named destinations and table of content;
+* text hyphenation;
+* text stretching and spacing (tracking);
+* automatic page break, line break and text alignments including justification;
+* automatic page numbering and page groups;
+* move and delete pages;
+* page compression (requires php-zlib extension);
+* XOBject Templates;
+* Layers and object visibility.
+* PDF/A-1b support.
+
+### Third party fonts:
+
+This library may include third party font files released with different licenses.
+
+All the PHP files on the fonts directory are subject to the general TCPDF license (GNU-LGPLv3),
+they do not contain any binary data but just a description of the general properties of a particular font.
+These files can be also generated on the fly using the font utilities and TCPDF methods.
+
+All the original binary TTF font files have been renamed for compatibility with TCPDF and compressed using the gzcompress PHP function that uses the ZLIB data format (.z files).
+
+The binary files (.z) that begins with the prefix "free" have been extracted from the GNU FreeFont collection (GNU-GPLv3).
+The binary files (.z) that begins with the prefix "pdfa" have been derived from the GNU FreeFont, so they are subject to the same license.
+For the details of Copyright, License and other information, please check the files inside the directory fonts/freefont-20120503
+Link : http://www.gnu.org/software/freefont/
+
+The binary files (.z) that begins with the prefix "dejavu" have been extracted from the DejaVu fonts 2.33 (Bitstream) collection.
+For the details of Copyright, License and other information, please check the files inside the directory fonts/dejavu-fonts-ttf-2.33
+Link : http://dejavu-fonts.org
+
+The binary files (.z) that begins with the prefix "ae" have been extracted from the Arabeyes.org collection (GNU-GPLv2).
+Link : http://projects.arabeyes.org/
+
+### ICC profile:
+
+TCPDF includes the sRGB.icc profile from the icc-profiles-free Debian package:
+https://packages.debian.org/source/stable/icc-profiles-free
+
+
+## Developer(s) Contact
+
+* Nicola Asuni <info@tecnick.com>
diff --git a/vendor/tecnickcom/tcpdf/composer.json b/vendor/tecnickcom/tcpdf/composer.json
index beab50943a..e734f13963 100644
--- a/vendor/tecnickcom/tcpdf/composer.json
+++ b/vendor/tecnickcom/tcpdf/composer.json
@@ -1,6 +1,6 @@
 {
 	"name": "tecnickcom/tcpdf",
-	"version": "6.2.12",
+	"version": "6.2.13",
 	"homepage": "http://www.tcpdf.org/",
 	"type": "library",
 	"description": "TCPDF is a PHP class for generating PDF documents and barcodes.",
@@ -18,7 +18,6 @@
 	},
 	"autoload": {
 		"classmap": [
-		"fonts",
 		"config",
 		"include",
 		"tcpdf.php",
diff --git a/vendor/tecnickcom/tcpdf/include/tcpdf_static.php b/vendor/tecnickcom/tcpdf/include/tcpdf_static.php
index f6d4d2b9eb..16353e0068 100644
--- a/vendor/tecnickcom/tcpdf/include/tcpdf_static.php
+++ b/vendor/tecnickcom/tcpdf/include/tcpdf_static.php
@@ -55,7 +55,7 @@ class TCPDF_STATIC {
 	 * Current TCPDF version.
 	 * @private static
 	 */
-	private static $tcpdf_version = '6.2.12';
+	private static $tcpdf_version = '6.2.13';
 
 	/**
 	 * String alias for total number of pages.
diff --git a/vendor/tecnickcom/tcpdf/tcpdf.php b/vendor/tecnickcom/tcpdf/tcpdf.php
index 599a3f8b96..65196e74de 100644
--- a/vendor/tecnickcom/tcpdf/tcpdf.php
+++ b/vendor/tecnickcom/tcpdf/tcpdf.php
@@ -1,7 +1,7 @@
 <?php
 //============================================================+
 // File name   : tcpdf.php
-// Version     : 6.2.12
+// Version     : 6.2.13
 // Begin       : 2002-08-03
 // Last Update : 2015-06-18
 // Author      : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
@@ -1822,9 +1822,9 @@ class TCPDF {
 	/**
 	 * This is the class constructor.
 	 * It allows to set up the page format, the orientation and the measure unit used in all the methods (except for the font sizes).
-	 * 
+	 *
 	 * IMPORTANT: Please note that this method sets the mb_internal_encoding to ASCII, so if you are using the mbstring module functions with TCPDF you need to correctly set/unset the mb_internal_encoding when needed.
-	 * 
+	 *
 	 * @param $orientation (string) page orientation. Possible values are (case insensitive):<ul><li>P or Portrait (default)</li><li>L or Landscape</li><li>'' (empty string) for automatic orientation</li></ul>
 	 * @param $unit (string) User measure unit. Possible values are:<ul><li>pt: point</li><li>mm: millimeter (default)</li><li>cm: centimeter</li><li>in: inch</li></ul><br />A point equals 1/72 of inch, that is to say about 0.35 mm (an inch being 2.54 cm). This is a very common unit in typography; font sizes are expressed in that unit.
 	 * @param $format (mixed) The format used for pages. It can be either: one of the string values specified at getPageSizeFromFormat() or an array of parameters specified at setPageFormat().
@@ -4691,7 +4691,7 @@ class TCPDF {
 	 * Defines the page and position a link points to.
 	 * @param $link (int) The link identifier returned by AddLink()
 	 * @param $y (float) Ordinate of target position; -1 indicates the current position. The default value is 0 (top of page)
-	 * @param $page (int) Number of target page; -1 indicates the current page (default value). If you prefix a page number with the * character, then this page will not be changed when adding/deleting/moving pages. 
+	 * @param $page (int) Number of target page; -1 indicates the current page (default value). If you prefix a page number with the * character, then this page will not be changed when adding/deleting/moving pages.
 	 * @public
 	 * @since 1.5
 	 * @see AddLink()
@@ -5944,7 +5944,9 @@ class TCPDF {
 			if ($startpage == $endpage) {
 				// single page
 				for ($column = $startcolumn; $column <= $endcolumn; ++$column) { // for each column
-					$this->selectColumn($column);
+					if ($column != $this->current_column) {
+						$this->selectColumn($column);
+					}
 					if ($this->rtl) {
 						$this->x -= $mc_margin['R'];
 					} else {
@@ -5973,7 +5975,9 @@ class TCPDF {
 				} // end for each column
 			} elseif ($page == $startpage) { // first page
 				for ($column = $startcolumn; $column < $this->num_columns; ++$column) { // for each column
-					$this->selectColumn($column);
+					if ($column != $this->current_column) {
+						$this->selectColumn($column);
+					}
 					if ($this->rtl) {
 						$this->x -= $mc_margin['R'];
 					} else {
@@ -5992,7 +5996,9 @@ class TCPDF {
 				} // end for each column
 			} elseif ($page == $endpage) { // last page
 				for ($column = 0; $column <= $endcolumn; ++$column) { // for each column
-					$this->selectColumn($column);
+					if ($column != $this->current_column) {
+						$this->selectColumn($column);
+					}
 					if ($this->rtl) {
 						$this->x -= $mc_margin['R'];
 					} else {
@@ -8358,7 +8364,7 @@ class TCPDF {
 							break;
 						}
 						case 'link': {
-							if (is_string($pl['txt'])) {
+							if (is_string($pl['txt']) && !empty($pl['txt'])) {
 								if ($pl['txt'][0] == '#') {
 									// internal destination
 									$annots .= ' /Dest /'.TCPDF_STATIC::encodeNameObject(substr($pl['txt'], 1));
@@ -9798,7 +9804,7 @@ class TCPDF {
 			//$out .= ' /XFA ';
 			$out .= ' >>';
 			// signatures
-			if ($this->sign AND isset($this->signature_data['cert_type']) 
+			if ($this->sign AND isset($this->signature_data['cert_type'])
 				AND (empty($this->signature_data['approval']) OR ($this->signature_data['approval'] != 'A'))) {
 				if ($this->signature_data['cert_type'] > 0) {
 					$out .= ' /Perms << /DocMDP '.($this->sig_obj_id + 1).' 0 R >>';
@@ -17723,7 +17729,7 @@ Putting 1 is equivalent to putting 0 and calling Ln() just after. Default value:
 										$spacew = ($spacewidth * $ns);
 									}
 									$offset = $strpiece[2][1] + strlen($strpiece[2][0]);
-									$epsposend = strpos($pmid, $this->epsmarker.'Q', $offset);				
+									$epsposend = strpos($pmid, $this->epsmarker.'Q', $offset);
 									if ($epsposend !== null) {
 										$epsposend += strlen($this->epsmarker.'Q');
 										$epsposbeg = strpos($pmid, 'q'.$this->epsmarker, $offset);
@@ -19749,7 +19755,7 @@ Putting 1 is equivalent to putting 0 and calling Ln() just after. Default value:
 				break;
 			}
 			case 'a': {
-				$this->HREF = '';
+				$this->HREF = array();
 				break;
 			}
 			case 'sup': {
@@ -23681,7 +23687,7 @@ Putting 1 is equivalent to putting 0 and calling Ln() just after. Default value:
 		}
 		return $name;
 	}
-		
+
 	/**
 	 * Sets the opening SVG element handler function for the XML parser. (*** TO BE COMPLETED ***)
 	 * @param $parser (resource) The first parameter, parser, is a reference to the XML parser calling the handler.
diff --git a/vendor/tecnickcom/tcpdf/tools/tcpdf_addfont.php b/vendor/tecnickcom/tcpdf/tools/tcpdf_addfont.php
index c0b258ec54..c0b258ec54 100644..100755
--- a/vendor/tecnickcom/tcpdf/tools/tcpdf_addfont.php
+++ b/vendor/tecnickcom/tcpdf/tools/tcpdf_addfont.php