MIN: use reasonable default values in `io.xarray.to_odim` (gain, offset, nodata, undetect, fillvalue)
MIN: use reasonable default values in `io.xarray.to_odim` (gain, offset, nodata, undetect, fillvalue)

heistermann/wradlib,wradlib/wradlib,kmuehlbauer/wradlib,wradlib/wradlib,heistermann/wradlib,kmuehlbauer/wradlib