Fix

sebastianbergmann · sebastianbergmann · commit 506e81096e1c · 2018-06-10T09:54:36.000+02:00
diff --git a/composer.json b/composer.json
@@ -14,7 +14,6 @@
             "email": "mail@kore-nordmann.de"
         }
     ],
-    "minimum-stability": "dev",
     "require": {
         "php": "^7.1"
     },
