title: Update jqTree options after initialization?
body: <p>I have jqTree working in my project but I need to update the dragAndDrop option after jqTree initialization.</p>
  
  <p>Is there a way to update options like in jQuery UI or do I have to "destroy" the plugin and initialize it again with the new options (in that case how do I destroy the plugin) ?</p>
  
  <p>Thanks</p>