fix(deps): upgrade ember-composability-tools (ref miguelcobain#1202)

The version used before (v0.0.12) causes the following error
when attempting to build with recent 4.x versions of Ember:
`this.registerPlugin is not a function`

miguelcobain/ember-composability-tools@v0.0.12...v1.1.0

package.json

@@ -33,7 +33,7 @@
     "ember-cli-htmlbars": "^5.7.1",
     "ember-cli-polyfill-importer": "^0.0.4",
     "ember-cli-sass": "^10.0.1",
-    "ember-composability-tools": "^0.0.12",
+    "ember-composability-tools": "^1.1.0",
     "ember-css-transitions": "^2.1.1",
     "ember-decorators": "^6.1.1",
     "ember-get-config": "^1.0.2",