message: upgrade deps of examples
diff: "webpack-dev-server": "^3.9.0"
  },
  "dependencies": {
  - "cesium": "^1.63.1",
  + "cesium": "^1.64.0",
  "react": "^16.12.0",
  "react-dom": "^16.12.0",
  "react-hot-loader": "^4.12.18",
  