ENH: add kwarg `origin` and FutureWarning to IRIS CartesianImage reader to warn of upcoming change, add tests (#503)

ENH: add `mode`-kwarg to `get_radolan_coordinates` and `get_radolan_grid` (#502)

FIX: backwards-compatible update dim0-retrieval to adapt to upstream changes

FIX: prefilter angles and use np.nanmean to calculate final angle resolution for ODIM/GAMIC xarray reader

FIX: do not restrict variables, but read all variables for Cf/Radial1 data (#497)

FIX: use default values for ODIM/OPERA what-group items if they are not available (#496)

Add support for radolan HG product (#495)

As per the official format description, the HG product uses 4 bytes
per pixel:
https://www.dwd.de/DE/leistungen/radarprodukte/formatbeschreibung_hg.pdf

MNT: rename master -> main

MIN: add `get_attr` and `get_attrs` to `RadarVolume` for easy access to groups

FIX: delete time "comment" only if needed (CfRadial), add moments

FIX: ensure numpy type in GAMIC moments

MNT: update README.md and notebooktest requirements

REL: 1.10.0

MNT: fix docstrings (#491)

Pre 1.10.0 updates (#490)

* MIN: adapt backend code to forthcoming xarray 0.18.0
* MNT: remove xarray non-public API calls
* FIX: do not guess area_of_interest in `reproject`
* MNT: style

ENH: decode iris DB_XHDR as numpy structured array (#488)

ENH: add CfRadial, ODIM and GAMIC xarray backends (#487)

FIX: align store/open_dataset with new backend structure

ENH: add RADOLAN xarray backend, rewrite RADOLAN reader

FIX: correctly unpack GAMIC hdf5 data according to `USM Enigma IV User Manual EN Edition: 2 Revision: 25` pg. 104, adapt tests