Update whats-new for #3125 and #2334 (#3135)
Update whats-new for #3125 and #2334 (#3135)


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