alignment cleanups
alignment cleanups

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