MAINT: Cleanup docstrings and comments
MAINT: Cleanup docstrings and comments

bartosh/zipline,grundgruen/zipline,humdings/zipline,jimgoo/zipline-fork,florentchandelier/zipline,humdings/zipline,umuzungu/zipline,grundgruen/zipline,nborggren/zipline,wilsonkichoi/zipline,magne-max/zipline-ja,alphaBenj/zipline,quantopian/zipline,wilsonkichoi/zipline,Scapogo/zipline,alphaBenj/zipline,Scapogo/zipline,ChinaQuants/zipline,enigmampc/catalyst,jimgoo/zipline-fork,florentchandelier/zipline,enigmampc/catalyst,dmitriz/zipline,nborggren/zipline,magne-max/zipline-ja,bartosh/zipline,dmitriz/zipline,ChinaQuants/zipline,umuzungu/zipline,quantopian/zipline