BUG: Makes macro dataset loader return a concrete ndarray.
BUG: Makes macro dataset loader return a concrete ndarray.

We cannot use fancy strided arrays with pipeline yet.

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