MAINT: Refactor DataPortal._get_minute_spot_value to avoid two lookups
MAINT: Refactor DataPortal._get_minute_spot_value to avoid two lookups

florentchandelier/zipline,bartosh/zipline,bartosh/zipline,alphaBenj/zipline,Scapogo/zipline,florentchandelier/zipline,enigmampc/catalyst,humdings/zipline,alphaBenj/zipline,quantopian/zipline,humdings/zipline,quantopian/zipline,Scapogo/zipline,enigmampc/catalyst