v4.41.1

• Removed (unsupported) wct-browser-legacy, which has dependencies that are critical security risks. Tested using https://github.com/Polymer/tools/tree/master/packages/web-component-tester for tests, which has less risk, but still some issues. Tests currently throw errors. The web-component-tester lib is now in package.json devDependencies.
• Added config file for npm-package-json-lint, which lints package.json.
• Removed iron-icon from package.json - is a dep of iron-icons.