message: Update Argument.js
  shouldComponentUpdate can reference the argument object itself rather than compare deep values within them.
diff: @@ -16,9 +16,7 @@ export default class Argument extends React.Component {
  }
  shouldComponentUpdate(nextProps) {
  - return this.props.arg.name !== nextProps.arg.name ||
  - this.props.arg.type !== nextProps.arg.type ||
  - this.props.arg.defaultValue !== nextProps.arg.defaultValue ||
  + return this.props.arg !== nextProps.arg ||
  this.props.onClickType !== nextProps.onClickType;
  }
  