message: new week, new test-fixture version
diff: "sinon-chai": "^2.7.0",
  "sinonjs": "^1.14.1",
  "stacky": "^1.3.0",
  - "test-fixture": "polymerelements/test-fixture#^2.0.0"
  + "test-fixture": "polymerelements/test-fixture#^3.0.0-rc.1"
  },
  "devDependencies": {
  "polymer": "Polymer/polymer#^1.5.0",
  