code: function touchRelease(e) {
                  e.preventDefault();
                  ignoreMouse = osk.touchMouseThreshold;
                  release(object, keyElement);
              }
docs: Handles a touch event which results in the release of an OSK
  key. Touch events will result in mouse events being ignored for
  touchMouseThreshold events.
  
  @private
  @param {TouchEvent} e
  The touch event being handled.