diff --git a/composer.json b/composer.json
index 81e135f7..9403447d 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
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     "ergebnis/composer-normalize": "^2.2.2",
     "ergebnis/license": "~0.1.0",
-    "ergebnis/php-cs-fixer-config": "^1.1.3",
+    "ergebnis/php-cs-fixer-config": "^2.0.0",
     "ergebnis/phpstan-rules": "~0.14.2",
     "ergebnis/test-util": "~0.7.0",
     "infection/infection": "~0.13.6",
diff --git a/composer.lock b/composer.lock
index 5198197a..0ef3fa5f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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         "This file is @generated automatically"
     ],
-    "content-hash": "420bf3e32e45d0b9a3d1ba02bb1b28a9",
+    "content-hash": "13e8f2f2cab6f6519a1ecf3132b9be33",
     "packages": [],
     "packages-dev": [
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@@ -263,24 +263,23 @@
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-            "version": "1.5.0",
+            "version": "1.5.1",
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                 "url": "https://github.com/composer/semver.git",
-                "reference": "46d9139568ccb8d9e7cdd4539cab7347568a5e2e"
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de"
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-                "url": "https://api.github.com/repos/composer/semver/zipball/46d9139568ccb8d9e7cdd4539cab7347568a5e2e",
-                "reference": "46d9139568ccb8d9e7cdd4539cab7347568a5e2e",
+                "url": "https://api.github.com/repos/composer/semver/zipball/c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
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             "require": {
                 "php": "^5.3.2 || ^7.0"
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             "require-dev": {
-                "phpunit/phpunit": "^4.5 || ^5.0.5",
-                "phpunit/phpunit-mock-objects": "2.3.0 || ^3.0"
+                "phpunit/phpunit": "^4.5 || ^5.0.5"
             },
             "type": "library",
             "extra": {
@@ -321,7 +320,7 @@
                 "validation",
                 "versioning"
             ],
-            "time": "2019-03-19T17:25:45+00:00"
+            "time": "2020-01-13T12:06:48+00:00"
         },
         {
             "name": "composer/xdebug-handler",
@@ -793,16 +792,16 @@
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-            "version": "1.1.3",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ergebnis/php-cs-fixer-config.git",
-                "reference": "53f9184461a68110a2b838abe79ec44fc77265e2"
+                "reference": "42453e7d7d95c045fd036dede4274069eb83d32c"
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-                "url": "https://api.github.com/repos/ergebnis/php-cs-fixer-config/zipball/53f9184461a68110a2b838abe79ec44fc77265e2",
-                "reference": "53f9184461a68110a2b838abe79ec44fc77265e2",
+                "url": "https://api.github.com/repos/ergebnis/php-cs-fixer-config/zipball/42453e7d7d95c045fd036dede4274069eb83d32c",
+                "reference": "42453e7d7d95c045fd036dede4274069eb83d32c",
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@@ -811,20 +810,21 @@
                 "php": "^7.1"
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             "require-dev": {
-                "ergebnis/composer-normalize": "^2.0.2",
+                "ergebnis/composer-normalize": "^2.2.2",
+                "ergebnis/license": "~0.1.0",
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                 "ergebnis/test-util": "~0.9.1",
                 "infection/infection": "~0.13.6",
-                "jangregor/phpstan-prophecy": "~0.5.1",
+                "jangregor/phpstan-prophecy": "~0.6.0",
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-                "phpstan/phpstan": "~0.12.3",
-                "phpstan/phpstan-deprecation-rules": "~0.12.0",
-                "phpstan/phpstan-phpunit": "~0.12.3",
-                "phpstan/phpstan-strict-rules": "~0.12.0",
-                "phpunit/phpunit": "^7.5.18",
-                "psalm/plugin-phpunit": "~0.8.0",
+                "phpstan/phpstan": "~0.12.5",
+                "phpstan/phpstan-deprecation-rules": "~0.12.2",
+                "phpstan/phpstan-phpunit": "~0.12.6",
+                "phpstan/phpstan-strict-rules": "~0.12.1",
+                "phpunit/phpunit": "^7.5.20",
+                "psalm/plugin-phpunit": "~0.8.1",
                 "symfony/filesystem": "^4.4.0",
-                "vimeo/psalm": "^3.8.1"
+                "vimeo/psalm": "^3.8.3"
             },
             "type": "library",
             "autoload": {
@@ -844,7 +844,7 @@
             ],
             "description": "Provides a configuration factory and multiple rule sets for friendsofphp/php-cs-fixer.",
             "homepage": "https://github.com/ergebnis/php-cs-fixer-config",
-            "time": "2020-01-02T19:00:57+00:00"
+            "time": "2020-01-20T08:00:08+00:00"
         },
         {
             "name": "ergebnis/phpstan-rules",
@@ -4153,7 +4153,7 @@
         },
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             "name": "symfony/event-dispatcher",
-            "version": "v4.4.1",
+            "version": "v4.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
@@ -4281,7 +4281,7 @@
         },
         {
             "name": "symfony/filesystem",
-            "version": "v4.4.1",
+            "version": "v4.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
@@ -4380,7 +4380,7 @@
         },
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             "name": "symfony/options-resolver",
-            "version": "v4.4.1",
+            "version": "v4.4.2",
             "source": {
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                 "url": "https://github.com/symfony/options-resolver.git",
@@ -4723,16 +4723,16 @@
         },
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             "name": "symfony/process",
-            "version": "v4.4.1",
+            "version": "v4.4.2",
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                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "51c0135ef3f44c5803b33dc60e96bf4f77752726"
+                "reference": "b84501ad50adb72a94fb460a5b5c91f693e99c9b"
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             "dist": {
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-                "url": "https://api.github.com/repos/symfony/process/zipball/51c0135ef3f44c5803b33dc60e96bf4f77752726",
-                "reference": "51c0135ef3f44c5803b33dc60e96bf4f77752726",
+                "url": "https://api.github.com/repos/symfony/process/zipball/b84501ad50adb72a94fb460a5b5c91f693e99c9b",
+                "reference": "b84501ad50adb72a94fb460a5b5c91f693e99c9b",
                 "shasum": ""
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             "require": {
@@ -4768,7 +4768,7 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2019-11-28T13:33:56+00:00"
+            "time": "2019-12-06T10:06:46+00:00"
         },
         {
             "name": "symfony/service-contracts",
@@ -4830,7 +4830,7 @@
         },
         {
             "name": "symfony/stopwatch",
-            "version": "v4.4.1",
+            "version": "v4.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",