Cf-xarray

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
* Fix API rendering by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/558
* Fix Grouper import with xarray versions older than 2024.11.0 by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/560


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.10.1...v0.10.2

<!-- Release notes generated using configuration in .github/release.yml at main -->

This release brings a new [FlagGrouper](https://cf-xarray.readthedocs.io/en/latest/flags.html#groupby) object for convenient categorical grouping.

What's Changed
* Maintenance by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/553
* Add FlagGrouper by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/556
* Add pooch downloader to workaround RtD issue by znichollscr in https://github.com/xarray-contrib/cf-xarray/pull/547

New Contributors
* znichollscr made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/547

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.10.0...v0.10.1

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed

* Adds support for remaining parametric vertical coordinate by jasonb5 in https://github.com/xarray-contrib/cf-xarray/pull/528 🥳

Minor Changes

* add min xarray pin on run and numpy py ver linters by ocefpaf in https://github.com/xarray-contrib/cf-xarray/pull/536
* Avoid one deepcopy in geometry encoding by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/537

New Contributors
* jasonb5 made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/528

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.9.5...v0.10.0

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
* Drop Python 3.9 by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/530
* Speed up geometry encoding by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/535


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.9.4...v0.9.5

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
* Allow encoding/decoding multiple geometry variables by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/526


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.9.3...v0.9.4

What's Changed
* Add grid_mapping for geometries if possible by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/521
* Rewrite unit formatter for pint 0.24 and earlier by aulemahal in https://github.com/xarray-contrib/cf-xarray/pull/523


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.9.2...v0.9.3