More array interface tests for ufuncs
More array interface tests for ufuncs

clarkfitzg/xray,jhamman/xray,xray/xray,pydata/xarray,markelg/xray,shoyer/xarray,chunweiyuan/xarray,pydata/xarray,petercable/xray,markelg/xray,cpaulik/xray,cpaulik/xray,NicWayand/xray,jhamman/xarray,pydata/xarray,shoyer/xarray,drewokane/xray,rabernat/xray,jhamman/xarray,shoyer/xray,kjordahl/xray,jcmgray/xarray,clarkfitzg/xray,kjordahl/xray,hetland/xray,hetland/xray,rabernat/xray,markelg/xray,jhamman/xarray