Allow custom animation callback
Allow custom animation callback

mrkiwi/jcarousel,Orehouse/jcarousel,stormwild/jcarousel,nguyenuit/jcarousel,cssfirefly/jcarousel,Hanzig/jcarousel,npmcomponent/jsor-jcarousel,Orehouse/jcarousel,nguyenuit/jcarousel,burakkp/jcarousel,Hanzig/jcarousel,cssfirefly/jcarousel,jsor/jcarousel,jsor/jcarousel,mrkiwi/jcarousel,stormwild/jcarousel