diff --git a/composer.lock b/composer.lock
index f2c4d24..7789d2b 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": "e66fd5c3f8342ff9ed1f0d21aab6ef81",
@@ -84,6 +84,51 @@
             ],
             "time": "2017-03-13T07:08:03+00:00"
         },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.99",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
+            ],
+            "time": "2018-07-02T15:55:56+00:00"
+        },
         {
             "name": "pimple/pimple",
             "version": "v3.0.2",
@@ -260,6 +305,7 @@
             "keywords": [
                 "microframework"
             ],
+            "abandoned": "symfony/flex",
             "time": "2016-11-06T18:09:06+00:00"
         },
         {
@@ -381,29 +427,30 @@
         },
         {
             "name": "symfony/http-foundation",
-            "version": "v3.2.7",
+            "version": "v3.4.36",
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                 "type": "git",
                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "cb0b6418f588952c9290b3df4ca650f1b7ab570a"
+                "reference": "d2d0cfe8e319d9df44c4cca570710fcf221d4593"
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-                "reference": "cb0b6418f588952c9290b3df4ca650f1b7ab570a",
+                "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": {
                 "branch-alias": {
-                    "dev-master": "3.2-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -430,7 +477,7 @@
             ],
             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2017-04-04T15:30:56+00:00"
+            "time": "2019-11-28T12:52:59+00:00"
         },
         {
             "name": "symfony/http-kernel",
@@ -516,16 +563,16 @@
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.3.0",
+            "version": "v1.13.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "e79d363049d1c2128f133a2667e4f4190904f7f4"
+                "reference": "7b4aab9743c30be783b73de055d24a39cf4b954f"
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             "dist": {
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-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/e79d363049d1c2128f133a2667e4f4190904f7f4",
-                "reference": "e79d363049d1c2128f133a2667e4f4190904f7f4",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/7b4aab9743c30be783b73de055d24a39cf4b954f",
+                "reference": "7b4aab9743c30be783b73de055d24a39cf4b954f",
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             "require": {
@@ -537,7 +584,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.3-dev"
+                    "dev-master": "1.13-dev"
                 }
             },
             "autoload": {
@@ -571,7 +618,66 @@
                 "portable",
                 "shim"
             ],
-            "time": "2016-11-14T01:06:16+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": {
+                "type": "zip",
+                "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/routing",