API methods
onImageClick
(function) - callback for click's over the large imageonImageSwap
(function) - callback foronImageSwapComplete
(function) - callback foronZoomedImageLoaded
(function) - callback foronComplete
(function) - callback formantainZoomAspectRatio
(option) - This change will allow to decide if you want to decrease zoom of one of the dimensions once the other reached it's top value, or keep the aspect ratio, default behaviour still being as always, allow to continue zooming out, so it keeps retrocompatibility.