Revert to dev version for 0.11
Revert to dev version for 0.11

xray/xray,pydata/xarray,chunweiyuan/xarray,pydata/xarray,jhamman/xarray,markelg/xray,shoyer/xray,pydata/xarray,jhamman/xarray,jhamman/xarray,jhamman/xray,shoyer/xarray,markelg/xray,shoyer/xarray,markelg/xray