FEATURE: tune a little bit composer.json

Enable optimizing autoloader and setup minimum stability to "dev"

composer.json

@@ -30,11 +30,6 @@
       "Modules\\": "modules/"
     }
   },
-  "autoload-dev": {
-    "classmap": [
-      "tests/TestCase.php"
-    ]
-  },
   "scripts": {
     "post-root-package-install": [
       "php -r \"copy('.env.example', '.env');\""
@@ -54,6 +49,8 @@
     ]
   },
   "config": {
-    "preferred-install": "dist"
+    "preferred-install": "dist",
-  }
+    "optimize-autoloader": true
+  },
+  "minimum-stability": "dev"
 }