update to 0.0.13

src/main/resources/modid.client.json

@@ -5,8 +5,7 @@
   "mixins": [
     "ExampleMixin"
   ],
-  "refmap": "modid.refmap.json",
   "injectors": {
     "defaultRequire": 1
   }
-}
+}

src/main/resources/modid.common.json

@@ -4,8 +4,7 @@
   "compatibilityLevel": "JAVA_8",
   "mixins": [
   ],
-  "refmap": "modid.refmap.json",
   "injectors": {
     "defaultRequire": 1
   }
-}
+}