message: Simplify quicktest implementation
diff: "polymer:test": "npm run build && node lib/tools/test-polymer",
  "polymer:checkpoint": "npm run build && node lib/tools/checkpoint-polymer",
  "clean": "rm -rf ./lib/ && rm -rf ./fixtures/generated/*",
  - "quicktest": "tsc || echo '' && mocha",
  + "quicktest": "tsc ; mocha",
  "test:watch": "watchy -w src/ -w custom_typings/ -- npm run quicktest --loglevel=silent",
  "prepublishOnly": "npm test",
  "prepare": "npm run build"
  