title: x-editable: callback for cancel evert
body: <p>For Twitter Bootstrap X Editable (<a href="https://vitalets.github.io/x-editable/docs.html" rel="nofollow">https://vitalets.github.io/x-editable/docs.html</a>), there's a callback for success, and for error. But there's nothing for cancel. Is there a way to listen for the cancel event for a specific editable?</p>