Merge pull request #516 from wp-cli/update/wp-cli-2-12

Author: swissspidy

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "wp-cli/wp-cli": "^2.11"
+        "wp-cli/wp-cli": "^2.12"
     },
     "require-dev": {
         "wp-cli/cache-command": "^1 || ^2",