ENH: Add numpy_utils.changed_locations.
ENH: Add numpy_utils.changed_locations.

florentchandelier/zipline,bartosh/zipline,Scapogo/zipline,quantopian/zipline,quantopian/zipline,enigmampc/catalyst,alphaBenj/zipline,humdings/zipline,bartosh/zipline,magne-max/zipline-ja,humdings/zipline,Scapogo/zipline,magne-max/zipline-ja,alphaBenj/zipline,enigmampc/catalyst,florentchandelier/zipline