message: provide yarn command to run e2e tests
  this assumes the riot-web local dev server is running
diff: "clean": "rimraf lib",
  "prepare": "yarn clean && yarn build && git rev-parse HEAD > git-revision.txt",
  "test": "karma start --single-run=true --browsers VectorChromeHeadless",
  - "test-multi": "karma start"
  + "test-multi": "karma start",
  + "e2etests": "./test/end-to-end-tests/run.sh --riot-url http://localhost:8080"
  },
  "dependencies": {
  "babel-plugin-syntax-dynamic-import": "^6.18.0",
  