Cf-xarray

What's Changed
* added `ValueError` for missing `grid_mapping` variable by larsbuntemeyer in https://github.com/xarray-contrib/cf-xarray/pull/458


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.3...v0.8.4

What's Changed
* Better [flag masks repr](https://cf-xarray.readthedocs.io/en/latest/flags.html#flag-masks) by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/454

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.2...v0.8.3

Support for [flag masks!](https://cf-xarray.readthedocs.io/en/latest/flags.html)

What's Changed
* Fix broken link by VeckoTheGecko in https://github.com/xarray-contrib/cf-xarray/pull/447
* Add support for 'flag_masks' by Descanonge in https://github.com/xarray-contrib/cf-xarray/pull/354

New Contributors
* VeckoTheGecko made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/447
* Descanonge made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/354

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.1...v0.8.2

What's Changed
* identify `X` and `Y` in rotated pole grids by larsbuntemeyer in https://github.com/xarray-contrib/cf-xarray/pull/426
* Major speedups in mappers. by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/427
* Update CITATION.cff by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/430
* Don't look for `T` in sgrid axes by kthyng in https://github.com/xarray-contrib/cf-xarray/pull/435
* Use pooch instead of bundling standard name table by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/436
* use trusted publishing by keewis in https://github.com/xarray-contrib/cf-xarray/pull/437


**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.8.0...v0.8.1

What's Changed
* Update link to COSIMA tutorial by navidcy in https://github.com/xarray-contrib/cf-xarray/pull/419
* Support grid_topology, mesh_topology CF roles. by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/420
* Update CF standard name table v80 by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/423
* add `cf.grid_mapping_names` by larsbuntemeyer in https://github.com/xarray-contrib/cf-xarray/pull/391
* Add rich repr by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/409
* Add sgrid axes parsing by dcherian in https://github.com/xarray-contrib/cf-xarray/pull/421

New Contributors
* navidcy made their first contribution in https://github.com/xarray-contrib/cf-xarray/pull/419

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.7.9...v0.8.0

What's Changed
* Fix packaging. v0.7.8 was yanked.

**Full Changelog**: https://github.com/xarray-contrib/cf-xarray/compare/v0.7.8...v0.7.9