I think that I must remove bonus because it breaks our tests :( :-D (evil PHP 7)

Author: pavelvondrasek

composer.json

@@ -33,8 +33,7 @@
     },
     "require-dev": {
         "ramsey/uuid": "^3.5",
-        "phpunit/phpunit": "^5.7",
-        "phpstan/phpstan": "^0.6.0"
+        "phpunit/phpunit": "^5.7"
     },
     "suggest": {
         "ramsey/uuid": "A PHP 5.4+ library for generating RFC 4122 version 1, 3, 4, and 5 universally unique identifiers (UUID)."