title: How to programmatically retrieve version number of a library?
body: <p>I want to update a cell in a spreadsheet when a new version is saved but I can't find a way to retrieve the version number ...</p>
  
  <p><strong>UPDATE</strong>: I create an <a href="http://code.google.com/p/google-apps-script-issues/issues/detail?id=1369" rel="nofollow">issue</a></p>