Merge branch '2.x'

* 2.x:
  Update branch alias

Author: acrobat

composer.json

@@ -49,7 +49,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-2.x": "2.18.x-dev",
+            "dev-2.x": "2.19.x-dev",
             "dev-master": "3.0.x-dev"
         }
     }