Enhancement: Keep packages sorted in composer.json

Author: localheinz

composer.json

@@ -24,8 +24,11 @@
         "psr-4": { "Clue\\React\\Stdio\\": "src/" }
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35",
+        "clue/arguments": "^2.0",
         "clue/commander": "^1.2",
-        "clue/arguments": "^2.0"
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+    },
+    "config": {
+        "sort-packages": true
     }
 }