fix: optionalDependencies -> devDependencies

package.json

@@ -30,53 +30,51 @@
     "@commitlint/travis-cli": "7.2.1",
     "@ember/optional-features": "0.7.0",
     "@ember/test-helpers": "1.0.1",
-    "@types/ember": "3.0.25",
+    "@mike-north/js-lib-renovate-config": "^1.0.0",
+    "@mike-north/js-lib-semantic-release-config": "^1.0.0",
+    "@types/ember__test-helpers": "0.7.6",
     "@types/ember-data": "3.1.3",
     "@types/ember-qunit": "3.4.3",
-    "@types/ember__test-helpers": "0.7.6",
+    "@types/ember": "3.0.25",
     "@types/qunit": "2.5.3",
     "@types/rsvp": "4.0.2",
     "broccoli-asset-rev": "3.0.0",
     "ember-ajax": "4.0.0",
-    "ember-cli": "3.5.1",
     "ember-cli-code-coverage": "1.0.0-beta.6",
     "ember-cli-dependency-checker": "3.0.0",
     "ember-cli-github-pages": "0.2.1",
-    "ember-cli-htmlbars": "3.0.1",
     "ember-cli-htmlbars-inline-precompile": "2.0.0",
+    "ember-cli-htmlbars": "3.0.1",
     "ember-cli-inject-live-reload": "2.0.1",
     "ember-cli-pretender": "3.0.0",
     "ember-cli-qunit": "4.4.0",
     "ember-cli-shims": "1.2.0",
+    "ember-cli-template-lint": "1.0.0-beta.2",
     "ember-cli-test-loader": "2.2.0",
     "ember-cli-tslint": "0.1.4",
     "ember-cli-typescript-blueprints": "2.0.0-beta.1",
     "ember-cli-uglify": "2.1.0",
+    "ember-cli": "3.5.1",
     "ember-code-snippet": "2.3.1",
     "ember-data": "3.4.0",
     "ember-disable-prototype-extensions": "1.1.3",
     "ember-export-application-global": "2.0.0",
     "ember-load-initializers": "2.0.0",
     "ember-maybe-import-regenerator": "0.1.6",
     "ember-resolver": "5.0.1",
-    "ember-source": "3.5.1",
     "ember-source-channel-url": "1.1.0",
-    "ember-cli-template-lint": "1.0.0-beta.2",
+    "ember-source": "3.5.1",
     "ember-try": "1.1.0",
     "husky": "1.2.0",
     "json-typescript": "1.1.0",
     "jsonapi-typescript": "0.1.0",
     "loader.js": "4.7.0",
     "qunit-dom": "0.8.1",
+    "semantic-release": "^15.9.12",
     "travis-deploy-once": "5.0.9",
     "tslint-config-prettier": "1.16.0",
     "typescript": "3.1.6"
   },
-  "optionalDependencies": {
-    "@mike-north/js-lib-renovate-config": "^1.0.0",
-    "@mike-north/js-lib-semantic-release-config": "^1.0.0",
-    "semantic-release": "^15.9.12"
-  },
   "keywords": [
     "ember-addon",
     "api",