title: fullcalendar.js v4 - How to set html in title?
body: <p>Does anyone have a solution for getting FullCalendar.js v4 to render the title as html?  All the old ways of getting the element and replacing the text with html is not working on the new version.  I have tried this below:</p>
  
  <pre><code>eventRender: function(info) {
    return $.parseHTML(info.event.title);
  </code></pre>
  
  <p>Semi works - the Html is rendered but its missing the rest of the html classes on the event.  My guess is it needs the full info object modified but setting this is not working:
      eventRender: function(info) {
  info.event.title = info.el.innerText;
    return info</p>