reindex needs to use merge not loc
reindex needs to use merge not loc

because it's SO much faster

VladimirTyrin/urbansim,synthicity/urbansim,SANDAG/urbansim,SANDAG/urbansim,synthicity/urbansim,UDST/urbansim,bricegnichols/urbansim,UDST/urbansim,waddell/urbansim,apdjustino/urbansim,waddell/urbansim,AZMAG/urbansim,apdjustino/urbansim,bricegnichols/urbansim,ual/urbansim,apdjustino/urbansim,VladimirTyrin/urbansim,UDST/urbansim,AZMAG/urbansim,SANDAG/urbansim,AZMAG/urbansim,SANDAG/urbansim,ual/urbansim,waddell/urbansim,bricegnichols/urbansim,ual/urbansim,synthicity/urbansim,VladimirTyrin/urbansim,bricegnichols/urbansim,VladimirTyrin/urbansim,apdjustino/urbansim,ual/urbansim,waddell/urbansim,UDST/urbansim,synthicity/urbansim,AZMAG/urbansim