The show and hide API methods now accept an optional parameter : a callback function. These callbacks will be called when the show/hide animations are over. This allows finer-grained control over individual tooltip interactions than the existing and more general constructor functionReady and functionAfter callbacks.
This translates in : $(el).tooltipster('show', myFunction(){ ... }) and $(el).tooltipster('hide', myFunction(){ ... })
Also, functionBefore will now be called everytime a tooltip's trigger is triggered (and at each call of the show method). Previously, it would not be called if the content of the tooltip was null. For people who instantiated Tooltipster with no content and were counting on the first functionBefore call (which never happened) to load content on-the-fly, this was unexpected.