message: Dedupe ember engines
diff: "lint:hbs": "ember-template-lint 'app/**/*.hbs' 'lib/**/*.hbs'",
  "lint:hbs:fix": "ember-template-lint . --fix",
  "lint:style": "stylelint 'app/**/*.scss' 'lib/**/*.scss'",
  - "start": "ember server",
  + "start": "EMBER_ENGINES_ADDON_DEDUPE=true ember serve",
  "test": "npm-run-all lint test:*",
  "test:ember": "EMBER_ENV=test ember exam --split=4 --parallel=1",
  "test:cover": "EMBER_ENV=test COVERAGE=true ember exam",
  