Updating php-cs-fixer and fix php environments.

Author: bruli

composer.json

@@ -22,21 +22,21 @@
   },
   "require": {
     "php": ">=5.6",
-    "friendsofphp/php-cs-fixer": "^1.11",
+    "friendsofphp/php-cs-fixer": "^2.1",
     "mockery/mockery": "~0.9",
     "phpunit/phpunit-mock-objects": "~3.0",
     "phpunit/phpunit": "~5.0",
-    "phpunit/php-code-coverage": "~3.0|~4.0",
+    "phpunit/php-code-coverage": "~4.0",
     "mybuilder/phpunit-accelerator": "^1.1",
-    "squizlabs/php_codesniffer": "~2.3",
-    "phpmd/phpmd": "~2.2",
+    "squizlabs/php_codesniffer": "~2.8",
+    "phpmd/phpmd": "~2.6",
     "symfony/dependency-injection": "~2.7|~3.0",
     "symfony/config": "~2.7|~3.0",
     "symfony/yaml": "~2.7|~3.0",
-    "fiunchinho/phpunit-randomizer": "~2.0",
-    "seld/jsonlint": "1.3.*",
+    "fiunchinho/phpunit-randomizer": "~3.0",
+    "seld/jsonlint": "~1.5",
     "bruli/ignore-files": "~1.0",
-    "beberlei/assert": "^2.5",
+    "beberlei/assert": "~2.7",
     "bruli/php-value-objects": "~0.1",
     "bruli/event-bus-bundle": "~0.2"
   },