Aviod 3.1.0 version conflict

GSokol · GSokol · commit dbdfd690f6e5 · 2017-03-30T18:55:56.000+03:00
diff --git a/composer.json b/composer.json
@@ -14,7 +14,7 @@
     ],
     "require": {
         "php": ">=5.5.0",
-        "nilportugues/api-transformer": "^3.0.0",
+        "nilportugues/api-transformer": "~3.0.0",
         "symfony/psr-http-message-bridge" : "^0.2|^0.3"
     },
     "require-dev": {
