minimum-stability is stable by default anyway, no need to list

Author: naderman

composer.json

@@ -10,7 +10,6 @@
             "email": "[email protected]"
         }
     ],
-    "minimum-stability": "stable",
     "require": {
         "php": "^5.6 || ^7.0",
         "psr/http-message": "^1.0",