title: Add ondblClick and click event to Codemirror
body: <p>I would like to add onDblClick event to codemirror 2. I found that onCursorActivity does not deliverer the event so there is no way for me from this method to filter the events. 
  How can I implement  onDbClick event on Codemirror ? </p>
  
  <p>Thanks in advance. </p>