title: Jira JQL that returns date of status change
body: <p>I'm trying to use JQL to measure cycle times (the Control Chart has other issues), so I need to get the date that an issue changed status.  I see that one can use the CHANGED keyword to <em>filter</em> issues that have changed status on certain dates, but I see no way to actually list the date of the change as a column.</p>
  
  <p>Any ideas?  How would you guys address this lack of visibility into cycle time data?</p>