Composer: modernize

Author: f3l1x

composer.json

@@ -54,18 +54,20 @@
   },
   "autoload-dev": {
     "psr-4": {
-      "Tests\\Fixtures\\": "tests/fixtures",
-      "Tests\\Toolkit\\": "tests/toolkit"
-    }
-  },
-  "extra": {
-    "branch-alias": {
-      "dev-master": "3.0-dev"
+      "Tests\\": "tests"
     }
   },
+  "minimum-stability": "dev",
+  "prefer-stable": true,
   "config": {
+    "sort-packages": true,
     "allow-plugins": {
       "dealerdirect/phpcodesniffer-composer-installer": true
     }
+  },
+  "extra": {
+    "branch-alias": {
+      "dev-master": "3.0-dev"
+    }
   }
 }