PRF: Normalize the history requested for SIDData rolling transforms.
PRF: Normalize the history requested for SIDData rolling transforms.

nborggren/zipline,DVegaCapital/zipline,CDSFinance/zipline,wubr2000/zipline,cmorgan/zipline,StratsOn/zipline,dmitriz/zipline,quantopian/zipline,kmather73/zipline,nborggren/zipline,enigmampc/catalyst,florentchandelier/zipline,jordancheah/zipline,zhoulingjun/zipline,chrjxj/zipline,jordancheah/zipline,humdings/zipline,morrisonwudi/zipline,stkubr/zipline,MonoCloud/zipline,aajtodd/zipline,euri10/zipline,StratsOn/zipline,wubr2000/zipline,cmorgan/zipline,magne-max/zipline-ja,sketchytechky/zipline,alphaBenj/zipline,aajtodd/zipline,dkushner/zipline,iamkingmaker/zipline,sketchytechky/zipline,ronalcc/zipline,humdings/zipline,bartosh/zipline,otmaneJai/Zipline,michaeljohnbennett/zipline,wilsonkichoi/zipline,keir-rex/zipline,alphaBenj/zipline,stkubr/zipline,grundgruen/zipline,DVegaCapital/zipline,jimgoo/zipline-fork,jimgoo/zipline-fork,Scapogo/zipline,YuepengGuo/zipline,michaeljohnbennett/zipline,grundgruen/zipline,AlirezaShahabi/zipline,kmather73/zipline,AlirezaShahabi/zipline,CDSFinance/zipline,keir-rex/zipline,quantopian/zipline,florentchandelier/zipline,wilsonkichoi/zipline,otmaneJai/Zipline,semio/zipline,MonoCloud/zipline,gwulfs/zipline,chrjxj/zipline,umuzungu/zipline,dmitriz/zipline,zhoulingjun/zipline,ChinaQuants/zipline,magne-max/zipline-ja,bartosh/zipline,YuepengGuo/zipline,euri10/zipline,semio/zipline,ChinaQuants/zipline,iamkingmaker/zipline,enigmampc/catalyst,morrisonwudi/zipline,joequant/zipline,dkushner/zipline,Scapogo/zipline,gwulfs/zipline,ronalcc/zipline,joequant/zipline,umuzungu/zipline