Enhancement: Keep packages sorted in composer.json

Author: localheinz

composer.json

@@ -20,10 +20,10 @@
     },
     "require": {
         "php": "^7.0",
-        "symfony/serializer": "^3.1|^4.0",
-        "symfony/yaml": "^3.1|^4.0",
         "league/uri": "^4.2|^5.3",
-        "php-jsonpointer/php-jsonpointer": "^3.0"
+        "php-jsonpointer/php-jsonpointer": "^3.0",
+        "symfony/serializer": "^3.1|^4.0",
+        "symfony/yaml": "^3.1|^4.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^6.0"
@@ -37,5 +37,8 @@
         }
     },
     "minimum-stability": "dev",
-    "prefer-stable": true
+    "prefer-stable": true,
+    "config": {
+        "sort-packages": true
+    }
 }