Update branch alias

Author: alexander-schranz

UPGRADE.md

@@ -6,7 +6,7 @@ UPGRADE
 - [1.1.0](#1.1.0)
 - [0.4.0](#0.4.0)
 
-### 2.0.0 (unreleased)
+### 2.0.0
 
 For the utf8mb4 compatibility with mysql some fields need to be shorten:
 

composer.json

@@ -43,7 +43,7 @@
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-develop": "2.0-dev"
+            "dev-master": "2.x-dev"
         }
     }
 }