BUG: Prevent algorithm init failure due to missing fill_delay.
BUG: Prevent algorithm init failure due to missing fill_delay.

Provide a default value for data_frequency, choosing 'daily',
so that the fill_delay is set even when a data_frequency value
is not in kwargs.

This does open up a place for disjointedness if the sim_params that
is passed to run does not match the data_frequency set during initialize.

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