title: Use older version of Office.js for Word add-in?
body: <p>Microsoft updated Office.js this week, and a bug in the latest version is causing serious issues for users of my Word add-in.</p>
  <p>Is it possible to specify an older version of Office.js?  This seems like basic functionality that should be provided.</p>
  <p>I see that it is possible to self host Office.js but Microsoft says that you can't do this for add-ins on App Source and my add-in is available there.</p>