chore(package): update ember-concurrency to version 1.1.6

Closes #93

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "ember-cli-sri": "^2.1.0",
     "ember-cli-static-api": "git+https://github.com/EmberJSBrasil/ember-cli-static-api.git",
     "ember-cli-uglify": "^1.2.0",
-    "ember-concurrency": "^0.8.1",
+    "ember-concurrency": "^1.1.6",
     "ember-data": "^2.12.0",
     "ember-export-application-global": "^2.0.0",
     "ember-invoke-action": "^1.4.0",