PHPUnit 4.8 calls function each(), deprecated in PHP 7.2

Author: mondrake

composer.json

@@ -19,6 +19,6 @@
       "bin-dir": "bin"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8"
+        "phpunit/phpunit": "^4.8 || 5.*"
     }
 }