fixed regression where weekNumberCalculation as a function wouldn't work
fixed regression where weekNumberCalculation as a function wouldn't work

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u/fullcalendar,marcucio/fullcalendar,shyftplan/fullcalendar,MeteorAdminz/fullcalendar,treejames/fullcalendar,aichangzhi123/fullcalendar,Wanderxx/fullcalendar,ouiptik/fullcalendar,sboele/fullcalendar,ehsandanesh/fullcalendar,chrismayu/fullcalendar,rgnevashev/fullcalendar,liukaijv/fullcalendar,tpruvot/fullcalendar,2947721120/fullcalendar,benoitmasson/fullcalendar,blubberly/fullcalendar,ehsandanesh/fullcalendar,deepskyr/fullcalendar,rgnevashev/fullcalendar,imskojs/fullcalendar,likereadboy/fullcalendar,richardsawyer/fullcalendar,matheusgomes17/fullcalendar,webcoding/fullcalendar,likereadboy/fullcalendar,oleg-babintsev/fullcalendar,ademidun/fullcalendar,IsakT/fullcalendar,marclemedioni/fullcalendar,clara-labs/fullcalendar,oleg-babintsev/fullcalendar,shekhardesigner/fullcalendar,thiagoantunes/fullcalendar,tpruvot/fullcalendar,shyftplan/fullcalendar,pietervisser/fullcalendar,kleisauke/fullcalendar,swps/fullcalendar,xiwc/fullcalendar,BassT/fullcalendar,pietervisser/fullcalendar,xiwc/fullcalendar,DevankAgarwal/fullcalendar,diego3/fullcalendar,marcucio/fullcalendar,arshaw/fullcalendar,ehsandanesh/fullcalendar,clara-labs/fullcalendar