diff --git a/composer.lock b/composer.lock
index 6aab11b..f103dd2 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,10 @@
 {
     "_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"
     ],
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+    "content-hash": "b1b28be3c2e5eba2f5dcb67079e91d33",
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@@ -456,12 +456,12 @@
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-                "reference": "9954a8cd904a53142ec32f0b39ba4784461c88d4",
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@@ -471,9 +471,9 @@
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-                "phpunit/phpunit": "^4.0|^5.0",
-                "satooshi/php-coveralls": "^0.6"
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@@ -501,20 +501,20 @@
             "keywords": [
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             ],
-            "time": "2015-11-02T09:24:44+00:00"
+            "time": "2018-05-12T21:30:07+00:00"
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@@ -579,7 +579,7 @@
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-            "time": "2017-06-19T01:22:40+00:00"
+            "time": "2018-11-05T09:00:11+00:00"
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@@ -825,16 +825,16 @@
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@@ -868,7 +868,7 @@
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-            "time": "2016-10-10T12:19:37+00:00"
+            "time": "2018-11-20T15:27:04+00:00"
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@@ -972,6 +972,74 @@
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+            "version": "v1.0.0",
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+                "psr/container": "^1.0"
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+                "psr/container": "When using the Service contracts",
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+                "symfony/translation-contracts-implementation": ""
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
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+            "description": "A set of abstractions extracted out of the Symfony components",
+            "homepage": "https://symfony.com",
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+            "time": "2018-10-31T08:00:32+00:00"
+        },
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@@ -1081,6 +1149,70 @@
             "homepage": "https://symfony.com",
             "time": "2018-03-19T22:35:49+00:00"
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+            "version": "v4.2.0",
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+                "url": "https://github.com/symfony/event-dispatcher.git",
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+            },
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+            },
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
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+            ],
+            "authors": [
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+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony EventDispatcher Component",
+            "homepage": "https://symfony.com",
+            "time": "2018-11-26T10:55:26+00:00"
+        },
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