message: refactor: simplify version import
diff: import { isString } from 'vega';
  -import pkg from '../package.json';
  +import { version } from '../package.json';
  import container from './container';
  import embed, { vega, vegaLite } from './embed';
  import { isURL } from './util';
  @@ -27,6 +27,6 @@ const wrapper: Wrapper = (...args: any[]): any => {
  (wrapper as any).embed = embed;
  (wrapper as any).vega = vega;
  (wrapper as any).default = embed;
  -(wrapper as any).version = pkg.version;
  +(wrapper as any).version = version;
  export default wrapper;
  