v2.8.0 Categoricals

What's Changed

• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #41
• Fix warnings by @jpn-- in #42
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #44
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #45
• Categoricals: correctly handle missing values, speed up simple string comparisons by @jpn-- in #46
• Test against Python 3.11 and 3.12 by @jpn-- in #43
• Categorical label indexing by @jpn-- in #47
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #48

New Contributors

• @pre-commit-ci made their first contribution in #41

Full Changelog: v2.7.0...v2.8.0