Add async to avoid js blocking

  • Hello,

    In order to speed up the loading of this javascript, it is recommended to load it asynchronously.
    In file twitter-widgets.js, I added this extra line

    js.async = true;

    So the full code gives this : 

    /*!
 * Twitter Embeddable Widget
 * https://dev.twitter.com/web/javascript/loading
 */
window.twttr = (function(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0],
    t = window.twttr || {};
  if (d.getElementById(id)) return t;
  js = d.createElement(s);
  js.id = id;
  js.async = true;
  js.src = "https://platform.twitter.com/widgets.js";
  fjs.parentNode.insertBefore(js, fjs);

  t._e = [];
  t.ready = function(f) {
    t._e.push(f);
  };

  return t;
}(document, "script", "twitter-wjs"));

    Can you update the plugin with this feature request ?

    Thanks a lot.

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