Thanks so much to jrycw for an incredible amount of fixes and improvements! This release doesn't have any new features, instead we focused on fixes and documentation.
Fixes
* Resolve issue with `table_font_color=` not accepting named colors by jrycw in https://github.com/posit-dev/great-tables/pull/285
* Ensure that group label rows have valid HTML by rich-iannone in https://github.com/posit-dev/great-tables/pull/308
* Fix Polars selectors error in `GT.cols_hide()` by jrycw in https://github.com/posit-dev/great-tables/pull/316
* Fix missing values not working with `GT.fmt_number()` by jrycw in https://github.com/posit-dev/great-tables/pull/317
* Fix display for integerlike values in nanoplots by jrycw in https://github.com/posit-dev/great-tables/pull/319
Docs
* Fix typos in docs by jrycw in https://github.com/posit-dev/great-tables/pull/286
* Add example from chalg by machow in https://github.com/posit-dev/great-tables/pull/323
Chores
* Clean up implementation of `GT.fmt_nanoplot()` and `GT.data_color()` by jrycw https://github.com/posit-dev/great-tables/pull/294, https://github.com/posit-dev/great-tables/pull/295
* Refactor `GT.fmt_time()`, `GT.fmt_date()` and `GT.fmt_datetime()` by jrycw in https://github.com/posit-dev/great-tables/pull/290
* Refactor `letters` and `Letters` functions in `_helpers` by jrycw in https://github.com/posit-dev/great-tables/pull/289
* Update type hints and organize import modules by jrycw in https://github.com/posit-dev/great-tables/pull/315
* Codebase cleanup and minor improvements by jrycw in https://github.com/posit-dev/great-tables/pull/305, https://github.com/posit-dev/great-tables/pull/292
* Improve test coverage by jrycw https://github.com/posit-dev/great-tables/pull/311, https://github.com/posit-dev/great-tables/pull/325
* Add tests for `GT.cols_align()` and extend support for `Polars` expressions by jrycw in https://github.com/posit-dev/great-tables/pull/320
**Full Changelog**: https://github.com/posit-dev/great-tables/compare/v0.5.0...v0.5.1