diff --git a/composer.json b/composer.json
index 25d126edc..dc83c8302 100644
--- a/composer.json
+++ b/composer.json
@@ -17,19 +17,21 @@
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         "nesbot/carbon": "^1.34",
         "sensio/framework-extra-bundle": "^5.1",
-        "sensiolabs/security-checker": "^4.1",
+        "sensiolabs/security-checker": "dev-master",
         "stof/doctrine-extensions-bundle": "^1.3",
-        "symfony/asset": "^4.1",
-        "symfony/console": "^4.1",
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         "symfony/flex": "^1.1",
-        "symfony/form": "^4.1",
-        "symfony/framework-bundle": "^4.1",
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-        "symfony/translation": "^4.1",
-        "symfony/yaml": "^4.1",
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@@ -39,17 +41,17 @@
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-        "symfony/css-selector": "^4.1",
-        "symfony/debug-bundle": "^4.1",
-        "symfony/dotenv": "^4.1",
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-        "symfony/stopwatch": "^4.1",
-        "symfony/web-profiler-bundle": "^4.1",
-        "symfony/web-server-bundle": "^4.1"
+        "symfony/phpunit-bridge": "4.2.x-dev",
+        "symfony/stopwatch": "4.2.x-dev",
+        "symfony/web-profiler-bundle": "4.2.x-dev",
+        "symfony/web-server-bundle": "4.2.x-dev"
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+    "minimum-stability": "dev",
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@@ -88,8 +90,7 @@
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-            "require": "4.1.*"
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     }
 }
diff --git a/composer.lock b/composer.lock
index ca3c27a17..0d95fa6bc 100644
--- a/composer.lock
+++ b/composer.lock
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@@ -3314,20 +3314,21 @@
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+            "version": "dev-master",
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-                "reference": "dc270d5fec418cc6ac983671dba5d80ffaffb142"
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+                "php": ">=5.5.9",
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@@ -3336,12 +3337,12 @@
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+                    "dev-master": "5.0-dev"
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-                "psr-0": {
-                    "SensioLabs\\Security": ""
+                "psr-4": {
+                    "SensioLabs\\Security\\": "SensioLabs/Security"
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@@ -3355,7 +3356,7 @@
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-            "time": "2018-02-28T22:10:01+00:00"
+            "time": "2018-10-06T12:35:11+00:00"
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@@ -3483,16 +3484,16 @@
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-            "version": "v4.1.6",
+            "version": "dev-master",
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-                "reference": "7bec13dad0df8146ee6ba9350203fcc832814bfe"
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@@ -3508,7 +3509,7 @@
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@@ -3535,7 +3536,7 @@
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-            "time": "2018-07-26T09:10:45+00:00"
+            "time": "2018-08-29T15:58:00+00:00"
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@@ -3608,16 +3609,16 @@
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+            "version": "dev-master",
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                 "url": "https://github.com/symfony/config.git",
-                "reference": "b3d4d7b567d7a49e6dfafb6d4760abc921177c96"
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@@ -3640,7 +3641,7 @@
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@@ -3667,24 +3668,25 @@
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             "homepage": "https://symfony.com",
-            "time": "2018-09-08T13:24:10+00:00"
+            "time": "2018-09-24T07:37:12+00:00"
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+            "version": "dev-master",
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                 "url": "https://github.com/symfony/console.git",
-                "reference": "dc7122fe5f6113cfaba3b3de575d31112c9aa60b"
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@@ -3708,7 +3710,7 @@
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@@ -3735,7 +3737,75 @@
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             "homepage": "https://symfony.com",
-            "time": "2018-10-03T08:15:46+00:00"
+            "time": "2018-10-03T08:52:36+00:00"
+        },
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+            "version": "dev-master",
+            "source": {
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+                "url": "https://github.com/symfony/contracts.git",
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+                "psr/container": "^1.0"
+            },
+            "suggest": {
+                "psr/cache": "When using the Cache contracts",
+                "psr/container": "When using the Service contracts",
+                "symfony/cache-contracts-implementation": "",
+                "symfony/service-contracts-implementation": "",
+                "symfony/translation-contracts-implementation": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Contracts\\": ""
+                },
+                "exclude-from-classmap": [
+                    "**/Tests/"
+                ]
+            },
+            "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": "A set of abstractions extracted out of the Symfony components",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "abstractions",
+                "contracts",
+                "decoupling",
+                "interfaces",
+                "interoperability",
+                "standards"
+            ],
+            "time": "2018-10-06T16:22:22+00:00"
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@@ -3795,16 +3865,16 @@
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@@ -3815,10 +3885,11 @@
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@@ -3829,7 +3900,7 @@
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@@ -3856,7 +3927,7 @@
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             "description": "Symfony DebugBundle",
             "homepage": "https://symfony.com",
-            "time": "2018-06-23T12:23:56+00:00"
+            "time": "2018-06-25T17:06:32+00:00"
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@@ -3890,33 +3961,35 @@
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-            "version": "v4.1.6",
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+                "psr/container-implementation": "1.0",
+                "symfony/service-contracts-implementation": "1.0"
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+                "symfony/config": "~4.2",
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@@ -3930,7 +4003,7 @@
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@@ -3957,7 +4030,7 @@
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-            "time": "2018-10-02T12:40:59+00:00"
+            "time": "2018-10-03T07:27:24+00:00"
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@@ -4300,23 +4373,23 @@
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@@ -4327,6 +4400,7 @@
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@@ -4337,7 +4411,7 @@
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-                "symfony/translation": "~3.4|~4.0",
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@@ -4350,7 +4424,7 @@
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@@ -4377,33 +4451,33 @@
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-            "time": "2018-10-02T12:40:59+00:00"
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@@ -4414,11 +4488,11 @@
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-                "symfony/messenger": ">=4.2",
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@@ -4436,17 +4510,17 @@
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@@ -4456,6 +4530,7 @@
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@@ -4552,21 +4627,22 @@
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@@ -4635,7 +4712,7 @@
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@@ -4902,16 +4979,16 @@
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@@ -4952,7 +5029,7 @@
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@@ -5461,59 +5538,134 @@
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@@ -5533,67 +5685,166 @@
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@@ -5613,22 +5864,22 @@
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                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -5695,29 +5946,30 @@
             ],
             "description": "Symfony Serializer Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T12:40:59+00:00"
+            "time": "2018-10-05T07:43:51+00:00"
         },
         {
             "name": "symfony/stopwatch",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "5bfc064125b73ff81229e19381ce1c34d3416f4b"
+                "reference": "187946b203e26517babe4dcbc2c045dec8579376"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/5bfc064125b73ff81229e19381ce1c34d3416f4b",
-                "reference": "5bfc064125b73ff81229e19381ce1c34d3416f4b",
+                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/187946b203e26517babe4dcbc2c045dec8579376",
+                "reference": "187946b203e26517babe4dcbc2c045dec8579376",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1.3"
+                "php": "^7.1.3",
+                "symfony/contracts": "^1.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -5744,7 +5996,7 @@
             ],
             "description": "Symfony Stopwatch Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T12:40:59+00:00"
+            "time": "2018-10-02T12:43:31+00:00"
         },
         {
             "name": "symfony/swiftmailer-bundle",
@@ -5810,20 +6062,21 @@
         },
         {
             "name": "symfony/translation",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/translation.git",
-                "reference": "9f0b61e339160a466ebcde167a6c5521c810e304"
+                "reference": "805ed11f0712f714433772a0f505626842af0beb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/translation/zipball/9f0b61e339160a466ebcde167a6c5521c810e304",
-                "reference": "9f0b61e339160a466ebcde167a6c5521c810e304",
+                "url": "https://api.github.com/repos/symfony/translation/zipball/805ed11f0712f714433772a0f505626842af0beb",
+                "reference": "805ed11f0712f714433772a0f505626842af0beb",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1.3",
+                "symfony/contracts": "^1.0",
                 "symfony/polyfill-mbstring": "~1.0"
             },
             "conflict": {
@@ -5831,6 +6084,9 @@
                 "symfony/dependency-injection": "<3.4",
                 "symfony/yaml": "<3.4"
             },
+            "provide": {
+                "symfony/translation-contracts-implementation": "1.0"
+            },
             "require-dev": {
                 "psr/log": "~1.0",
                 "symfony/config": "~3.4|~4.0",
@@ -5848,7 +6104,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -5875,7 +6131,7 @@
             ],
             "description": "Symfony Translation Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T16:36:10+00:00"
+            "time": "2018-10-06T16:22:22+00:00"
         },
         {
             "name": "symfony/twig-bridge",
@@ -5969,21 +6225,21 @@
         },
         {
             "name": "symfony/twig-bundle",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/twig-bundle.git",
-                "reference": "efc59fa344a2b7985afae56877a6cf59de9954e2"
+                "reference": "12cb48441868cda3bcedaf10e31a189d4aa6d325"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/twig-bundle/zipball/efc59fa344a2b7985afae56877a6cf59de9954e2",
-                "reference": "efc59fa344a2b7985afae56877a6cf59de9954e2",
+                "url": "https://api.github.com/repos/symfony/twig-bundle/zipball/12cb48441868cda3bcedaf10e31a189d4aa6d325",
+                "reference": "12cb48441868cda3bcedaf10e31a189d4aa6d325",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1.3",
-                "symfony/config": "~3.4|~4.0",
+                "symfony/config": "~4.2",
                 "symfony/http-foundation": "~4.1",
                 "symfony/http-kernel": "~4.1",
                 "symfony/polyfill-ctype": "~1.8",
@@ -5992,7 +6248,8 @@
             },
             "conflict": {
                 "symfony/dependency-injection": "<4.1",
-                "symfony/framework-bundle": "<4.1"
+                "symfony/framework-bundle": "<4.1",
+                "symfony/translation": "<4.2"
             },
             "require-dev": {
                 "doctrine/annotations": "~1.0",
@@ -6012,7 +6269,7 @@
             "type": "symfony-bundle",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -6039,7 +6296,7 @@
             ],
             "description": "Symfony TwigBundle",
             "homepage": "https://symfony.com",
-            "time": "2018-09-30T03:38:13+00:00"
+            "time": "2018-09-30T03:40:00+00:00"
         },
         {
             "name": "symfony/validator",
@@ -6204,34 +6461,33 @@
         },
         {
             "name": "symfony/web-profiler-bundle",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/web-profiler-bundle.git",
-                "reference": "17fed79cdbc4649ea59297e6ca7aa8e89182c3c1"
+                "reference": "d86066c8bda6f7f81acc56f4fdf8d4c74ba78133"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/web-profiler-bundle/zipball/17fed79cdbc4649ea59297e6ca7aa8e89182c3c1",
-                "reference": "17fed79cdbc4649ea59297e6ca7aa8e89182c3c1",
+                "url": "https://api.github.com/repos/symfony/web-profiler-bundle/zipball/d86066c8bda6f7f81acc56f4fdf8d4c74ba78133",
+                "reference": "d86066c8bda6f7f81acc56f4fdf8d4c74ba78133",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1.3",
+                "symfony/config": "^4.2",
                 "symfony/http-kernel": "~4.1",
                 "symfony/routing": "~3.4|~4.0",
-                "symfony/twig-bridge": "~3.4|~4.0",
+                "symfony/twig-bundle": "~4.2",
                 "symfony/var-dumper": "~3.4|~4.0",
                 "twig/twig": "~1.34|~2.4"
             },
             "conflict": {
-                "symfony/config": "<3.4",
                 "symfony/dependency-injection": "<3.4",
                 "symfony/event-dispatcher": "<3.4",
                 "symfony/var-dumper": "<3.4"
             },
             "require-dev": {
-                "symfony/config": "~3.4|~4.0",
                 "symfony/console": "~3.4|~4.0",
                 "symfony/dependency-injection": "~3.4|~4.0",
                 "symfony/stopwatch": "~3.4|~4.0"
@@ -6239,7 +6495,7 @@
             "type": "symfony-bundle",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -6266,20 +6522,20 @@
             ],
             "description": "Symfony WebProfilerBundle",
             "homepage": "https://symfony.com",
-            "time": "2018-09-30T03:38:13+00:00"
+            "time": "2018-09-24T08:00:32+00:00"
         },
         {
             "name": "symfony/yaml",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "367e689b2fdc19965be435337b50bc8adf2746c9"
+                "reference": "7228a3e2163ab5623231f126cf8d7701072f9d16"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/367e689b2fdc19965be435337b50bc8adf2746c9",
-                "reference": "367e689b2fdc19965be435337b50bc8adf2746c9",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/7228a3e2163ab5623231f126cf8d7701072f9d16",
+                "reference": "7228a3e2163ab5623231f126cf8d7701072f9d16",
                 "shasum": ""
             },
             "require": {
@@ -6298,7 +6554,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -6325,7 +6581,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T16:36:10+00:00"
+            "time": "2018-10-02T16:38:08+00:00"
         },
         {
             "name": "tightenco/collect",
@@ -7343,16 +7599,16 @@
         },
         {
             "name": "symfony/browser-kit",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/browser-kit.git",
-                "reference": "c55fe9257003b2d95c0211b3f6941e8dfd26dffd"
+                "reference": "c403035e5a4e8b2919d725a511022ef1e2d3232b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/browser-kit/zipball/c55fe9257003b2d95c0211b3f6941e8dfd26dffd",
-                "reference": "c55fe9257003b2d95c0211b3f6941e8dfd26dffd",
+                "url": "https://api.github.com/repos/symfony/browser-kit/zipball/c403035e5a4e8b2919d725a511022ef1e2d3232b",
+                "reference": "c403035e5a4e8b2919d725a511022ef1e2d3232b",
                 "shasum": ""
             },
             "require": {
@@ -7369,7 +7625,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -7396,20 +7652,20 @@
             ],
             "description": "Symfony BrowserKit Component",
             "homepage": "https://symfony.com",
-            "time": "2018-07-26T09:10:45+00:00"
+            "time": "2018-09-29T21:52:52+00:00"
         },
         {
             "name": "symfony/css-selector",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/css-selector.git",
-                "reference": "d67de79a70a27d93c92c47f37ece958bf8de4d8a"
+                "reference": "3504dc5c848fe7362561fdeddaf24c2616577a43"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/css-selector/zipball/d67de79a70a27d93c92c47f37ece958bf8de4d8a",
-                "reference": "d67de79a70a27d93c92c47f37ece958bf8de4d8a",
+                "url": "https://api.github.com/repos/symfony/css-selector/zipball/3504dc5c848fe7362561fdeddaf24c2616577a43",
+                "reference": "3504dc5c848fe7362561fdeddaf24c2616577a43",
                 "shasum": ""
             },
             "require": {
@@ -7418,7 +7674,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -7449,7 +7705,7 @@
             ],
             "description": "Symfony CssSelector Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T16:36:10+00:00"
+            "time": "2018-10-02T16:38:08+00:00"
         },
         {
             "name": "symfony/dom-crawler",
@@ -7510,16 +7766,16 @@
         },
         {
             "name": "symfony/dotenv",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/dotenv.git",
-                "reference": "22ca63c46e252b8a8f37b8f9e6da66bff5b3d3e7"
+                "reference": "60dd62385303b4283023ae1e6c427a06794a01c8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/dotenv/zipball/22ca63c46e252b8a8f37b8f9e6da66bff5b3d3e7",
-                "reference": "22ca63c46e252b8a8f37b8f9e6da66bff5b3d3e7",
+                "url": "https://api.github.com/repos/symfony/dotenv/zipball/60dd62385303b4283023ae1e6c427a06794a01c8",
+                "reference": "60dd62385303b4283023ae1e6c427a06794a01c8",
                 "shasum": ""
             },
             "require": {
@@ -7531,7 +7787,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -7563,7 +7819,7 @@
                 "env",
                 "environment"
             ],
-            "time": "2018-07-26T11:24:31+00:00"
+            "time": "2018-09-05T08:57:29+00:00"
         },
         {
             "name": "symfony/maker-bundle",
@@ -7633,16 +7889,16 @@
         },
         {
             "name": "symfony/phpunit-bridge",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/phpunit-bridge.git",
-                "reference": "2474c5d4a5e3431fee2f6f0dddde9d34983d9ceb"
+                "reference": "973a72e0c72156fe2bbc28b6b4a9a4b9d656f409"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/phpunit-bridge/zipball/2474c5d4a5e3431fee2f6f0dddde9d34983d9ceb",
-                "reference": "2474c5d4a5e3431fee2f6f0dddde9d34983d9ceb",
+                "url": "https://api.github.com/repos/symfony/phpunit-bridge/zipball/973a72e0c72156fe2bbc28b6b4a9a4b9d656f409",
+                "reference": "973a72e0c72156fe2bbc28b6b4a9a4b9d656f409",
                 "shasum": ""
             },
             "require": {
@@ -7661,7 +7917,7 @@
             "type": "symfony-bridge",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 },
                 "thanks": {
                     "name": "phpunit/phpunit",
@@ -7695,7 +7951,7 @@
             ],
             "description": "Symfony PHPUnit Bridge",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T12:40:59+00:00"
+            "time": "2018-10-02T12:43:31+00:00"
         },
         {
             "name": "symfony/polyfill-php70",
@@ -7807,16 +8063,16 @@
         },
         {
             "name": "symfony/web-server-bundle",
-            "version": "v4.1.6",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/web-server-bundle.git",
-                "reference": "448d4437e95d0884856a1e83bc51a15b5d048060"
+                "reference": "ff4b16ac5f43ad70f37aa0b282db22f7ade75659"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/web-server-bundle/zipball/448d4437e95d0884856a1e83bc51a15b5d048060",
-                "reference": "448d4437e95d0884856a1e83bc51a15b5d048060",
+                "url": "https://api.github.com/repos/symfony/web-server-bundle/zipball/ff4b16ac5f43ad70f37aa0b282db22f7ade75659",
+                "reference": "ff4b16ac5f43ad70f37aa0b282db22f7ade75659",
                 "shasum": ""
             },
             "require": {
@@ -7835,7 +8091,7 @@
             "type": "symfony-bundle",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "4.2-dev"
                 }
             },
             "autoload": {
@@ -7862,12 +8118,30 @@
             ],
             "description": "Symfony WebServerBundle",
             "homepage": "https://symfony.com",
-            "time": "2018-07-26T09:10:45+00:00"
+            "time": "2018-10-05T18:36:54+00:00"
         }
     ],
     "aliases": [],
-    "minimum-stability": "beta",
-    "stability-flags": [],
+    "minimum-stability": "dev",
+    "stability-flags": {
+        "sensiolabs/security-checker": 20,
+        "symfony/asset": 20,
+        "symfony/console": 20,
+        "symfony/form": 20,
+        "symfony/framework-bundle": 20,
+        "symfony/security-bundle": 20,
+        "symfony/serializer": 20,
+        "symfony/translation": 20,
+        "symfony/yaml": 20,
+        "symfony/browser-kit": 20,
+        "symfony/css-selector": 20,
+        "symfony/debug-bundle": 20,
+        "symfony/dotenv": 20,
+        "symfony/phpunit-bridge": 20,
+        "symfony/stopwatch": 20,
+        "symfony/web-profiler-bundle": 20,
+        "symfony/web-server-bundle": 20
+    },
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
diff --git a/config/bolt/config.yaml b/config/bolt/config.yaml
index 4ec951eda..e04e2ae40 100644
--- a/config/bolt/config.yaml
+++ b/config/bolt/config.yaml
@@ -6,8 +6,7 @@
 #
 # If you're trying out Bolt, just keep it set to SQLite for now.
 database:
-    driver: sqlite
-    databasename: bolt
+    url: '%env(DATABASE_URL)%'
 
 # The name of the website
 sitename: A sample site in CONFIG
diff --git a/config/packages/doctrine.yaml b/config/packages/doctrine.yaml
index 3f2dcb18e..2a4d048a6 100644
--- a/config/packages/doctrine.yaml
+++ b/config/packages/doctrine.yaml
@@ -9,8 +9,7 @@ doctrine:
         driver: 'pdo_sqlite'
         server_version: '3.15'
         charset: utf8mb4
-
-        url: '%env(resolve:DATABASE_URL)%'
+        url: '%bolt.database.url%'
     orm:
         auto_generate_proxy_classes: '%kernel.debug%'
         naming_strategy: doctrine.orm.naming_strategy.underscore
diff --git a/src/Configuration/Config.php b/src/Configuration/Config.php
index 3744b65a9..9819577a9 100644
--- a/src/Configuration/Config.php
+++ b/src/Configuration/Config.php
@@ -81,38 +81,6 @@ public function parseConfig()
         return $config;
     }
 
-    /**
-     * @return array
-     */
-    public function getParameters(): array
-    {
-        $array = $this->data->get('general')->toArray();
-
-        return $this->flatten($array);
-    }
-
-    /**
-     * @param array  $array
-     * @param string $prefix
-     *
-     * @return array
-     */
-    private function flatten(array $array, string $prefix = ''): array
-    {
-        $result = [];
-        foreach ($array as $key => $value) {
-            if (is_int($key)) {
-                $result[trim($prefix, '.')][] = $value;
-            } elseif (is_array($value)) {
-                $result = $result + $this->flatten($value, $prefix . $key . '.');
-            } else {
-                $result[$prefix . $key] = $value;
-            }
-        }
-
-        return $result;
-    }
-
     /**
      * Get a config value, using a path.
      *
diff --git a/src/Kernel.php b/src/Kernel.php
index 7c373c3e2..6cad3affb 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -4,13 +4,14 @@
 
 namespace Bolt;
 
-use Bolt\Configuration\Config;
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
+use Symfony\Component\Config\FileLocator;
 use Symfony\Component\Config\Loader\LoaderInterface;
 use Symfony\Component\Config\Resource\FileResource;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Kernel as BaseKernel;
 use Symfony\Component\Routing\RouteCollectionBuilder;
+use Symfony\Component\Yaml\Yaml;
 
 class Kernel extends BaseKernel
 {
@@ -44,11 +45,17 @@ protected function configureContainer(ContainerBuilder $container, LoaderInterfa
         $container->setParameter('container.dumper.inline_class_loader', true);
         $confDir = $this->getProjectDir() . '/config';
 
-        $config = new Config();
-        foreach ($config->getParameters() as $key => $value) {
+        $fileLocator = new FileLocator([ $confDir . '/bolt' ]);
+        $fileName = $fileLocator->locate('config.yaml', null, true);
+
+        $yaml = Yaml::parseFile($fileName);
+        unset($yaml['__nodes']);
+
+        $container->set('bolt.config.general', $yaml);
+
+        foreach ($this->flattenKeys($yaml) as $key => $value) {
             $container->setParameter('bolt.' . $key, $value);
         }
-        $container->set('config', $config);
 
         $loader->load($confDir . '/{packages}/*' . self::CONFIG_EXTS, 'glob');
         $loader->load($confDir . '/{packages}/' . $this->environment . '/**/*' . self::CONFIG_EXTS, 'glob');
@@ -64,4 +71,26 @@ protected function configureRoutes(RouteCollectionBuilder $routes)
         $routes->import($confDir . '/{routes}/' . $this->environment . '/**/*' . self::CONFIG_EXTS, '/', 'glob');
         $routes->import($confDir . '/{routes}' . self::CONFIG_EXTS, '/', 'glob');
     }
+
+    /**
+     * @param array  $array
+     * @param string $prefix
+     *
+     * @return array
+     */
+    private function flattenKeys(array $array, string $prefix = ''): array
+    {
+        $result = [];
+        foreach ($array as $key => $value) {
+            if (is_int($key)) {
+                $result[trim($prefix, '.')][] = $value;
+            } elseif(is_array($value)) {
+                $result = $result + $this->flattenKeys($value, $prefix . $key . '.');
+            } else {
+                $result[$prefix . $key] = $value;
+            }
+        }
+
+        return $result;
+    }
 }
diff --git a/symfony.lock b/symfony.lock
index bc27c5646..2c81a5d47 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -287,6 +287,9 @@
             "ref": "5ec5bb098bc693cd92f03390dd488ea0847cfcc7"
         }
     },
+    "symfony/contracts": {
+        "version": "1.0-dev"
+    },
     "symfony/css-selector": {
         "version": "v3.4.0-beta2"
     },
@@ -434,9 +437,6 @@
             "ref": "5b2f0ee78c90d671860ac6450e37dec10fbc0719"
         }
     },
-    "symfony/security": {
-        "version": "v3.4.0-beta2"
-    },
     "symfony/security-bundle": {
         "version": "3.3",
         "recipe": {
@@ -446,6 +446,18 @@
             "ref": "85834af1496735f28d831489d12ab1921a875e0d"
         }
     },
+    "symfony/security-core": {
+        "version": "4.2-dev"
+    },
+    "symfony/security-csrf": {
+        "version": "4.2-dev"
+    },
+    "symfony/security-guard": {
+        "version": "4.2-dev"
+    },
+    "symfony/security-http": {
+        "version": "4.2-dev"
+    },
     "symfony/serializer": {
         "version": "v4.1.4"
     },