diff --git a/composer.lock b/composer.lock
index d8ac643..f7c8964 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,7 +1,7 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
     "content-hash": "96098e473b028cdb2529580554a1ae3e",
@@ -1332,29 +1332,30 @@
         },
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-            "version": "v3.3.6",
+            "version": "v3.4.36",
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                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "49e8cd2d59a7aa9bfab19e46de680c76e500a031"
+                "reference": "d2d0cfe8e319d9df44c4cca570710fcf221d4593"
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-                "reference": "49e8cd2d59a7aa9bfab19e46de680c76e500a031",
+                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/d2d0cfe8e319d9df44c4cca570710fcf221d4593",
+                "reference": "d2d0cfe8e319d9df44c4cca570710fcf221d4593",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5.9",
-                "symfony/polyfill-mbstring": "~1.1"
+                "php": "^5.5.9|>=7.0.8",
+                "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": {
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-                    "dev-master": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -1381,7 +1382,7 @@
             ],
             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2017-07-21T11:04:46+00:00"
+            "time": "2019-11-28T12:52:59+00:00"
         },
         {
             "name": "symfony/http-kernel",
@@ -1471,16 +1472,16 @@
         },
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-            "version": "v1.5.0",
+            "version": "v1.13.1",
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                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803"
+                "reference": "7b4aab9743c30be783b73de055d24a39cf4b954f"
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-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
-                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/7b4aab9743c30be783b73de055d24a39cf4b954f",
+                "reference": "7b4aab9743c30be783b73de055d24a39cf4b954f",
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             "require": {
@@ -1492,7 +1493,7 @@
             "type": "library",
             "extra": {
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-                    "dev-master": "1.5-dev"
+                    "dev-master": "1.13-dev"
                 }
             },
             "autoload": {
@@ -1526,7 +1527,66 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-06-14T15:44:48+00:00"
+            "time": "2019-11-27T14:18:11+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php70",
+            "version": "v1.13.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php70.git",
+                "reference": "af23c7bb26a73b850840823662dda371484926c4"
+            },
+            "dist": {
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+                "url": "https://api.github.com/repos/symfony/polyfill-php70/zipball/af23c7bb26a73b850840823662dda371484926c4",
+                "reference": "af23c7bb26a73b850840823662dda371484926c4",
+                "shasum": ""
+            },
+            "require": {
+                "paragonie/random_compat": "~1.0|~2.0|~9.99",
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.13-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": "2019-11-27T13:56:44+00:00"
         },
         {
             "name": "symfony/process",
@@ -2740,6 +2800,7 @@
                 "mock",
                 "xunit"
             ],
+            "abandoned": true,
             "time": "2017-06-30T09:13:00+00:00"
         },
         {