message: expose `findHover`. (used in tooltip)
diff: @@ -359,6 +359,16 @@ define(function(require) {
  this.handler.setCursorStyle(cursorStyle);
  },
  + /**
  + * Find hovered element
  + * @param {number} x
  + * @param {number} y
  + * @return {Object} {target, topTarget}
  + */
  + findHover: function (x, y) {
  + return this.handler.findHover(x, y);
  + },
  +
  /**
  * Bind event
  *
  