chore(package): update ember-composable-helpers to version 3.0.2

Closes #1754

Author: greenkeeper[bot]

package.json

@@ -61,7 +61,7 @@
     "ember-cli-test-loader": "^2.0.0",
     "ember-cli-uglify": "^2.0.0",
     "ember-click-outside": "^0.1.10",
-    "ember-composable-helpers": "2.1.0",
+    "ember-composable-helpers": "3.0.2",
     "ember-concurrency": "^0.8.1",
     "ember-data": "~2.18.0",
     "ember-disable-proxy-controllers": "^1.0.1",