BUG: Fix missing and delayed transaction last_sale_price's.
BUG: Fix missing and delayed transaction last_sale_price's.

Critical that trade events be last, so that the perf tracker's
position information be updated with both the transaction and
the trade for last_sale.

Without, the first transaction would be recorded with a last_sale
of 0.

With @fawce

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