Cf-xarray

What's Changed
* Remove pycompat ref in utils by aulemahal in https://github.com/xarray-contrib/cf-xarray/pull/502


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.9...v0.9.0

What's Changed
* cast units to `str` before applying any other preprocessor by keewis in https://github.com/xarray-contrib/cf-xarray/pull/498


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.8...v0.8.9

What's Changed
Much improved support for bit masks and converting geometries to CF!
* Add larger bit depth for displaying flag_masks by mps01060 in https://github.com/xarray-contrib/cf-xarray/pull/492
* Fix conversion between shapely and cf for lines by jsignell in https://github.com/xarray-contrib/cf-xarray/pull/493
* Add conversion between shapely and cf for polygons by jsignell in https://github.com/xarray-contrib/cf-xarray/pull/495

New Contributors
* mps01060 made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/492

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.7...v0.8.8

What's Changed
* Check compatibility of coordinate variable dimensions before assignment. by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/484

* Add conversion between cf and shapely for lines by jsignell in https://github.com/xarray-contrib/cf-xarray/pull/460

New Contributors
* jsignell made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/482

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.6...v0.8.7

Fix a problem with previous release

What's Changed
* Set python-version as string by Zeitsperre in https://github.com/xarray-contrib/cf-xarray/pull/479

New Contributors
* Zeitsperre made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/479

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.5...v0.8.6

What's Changed
* remove distutils by ocefpaf in https://github.com/xarray-contrib/cf-xarray/pull/463
* Fix get_bounds_dim_name regression. by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/473


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.4...v0.8.5