DOC Add highlights section to release announcements.
DOC Add highlights section to release announcements.

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