Enable auto-generated release notes to be categorized by PR label

[mfisher87]

Currently, the release notes generated look like this, but I'd like to categorize the changes:

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What's Changed

• Fix crash when the file save dialog is cancelled by @robertguetzkow in Fix crash when the file save dialog is cancelled #54
• Fix qt import, fixes QT4Agg deprecation #55 by @maxnoe in Fix qt import, fixes #55 #57
• Modernize packaging config by @mfisher87 in Modernize packaging config #63
• Set up ruff & black with pre-commit and document usage by @mfisher87 in Set up ruff & black with pre-commit and document usage #64
• More precommit checks by @mfisher87 in More precommit checks #65
• Fixup original unit test, set up tests to run in GitHub Actions by @mfisher87 in Fixup original unit test, set up tests to run in GitHub Actions #66
• Fix main branch actions failures, other pre-commit tweaks by @mfisher87 in Fix main branch actions failures, other pre-commit tweaks #68
• Unit test refactor by @mfisher87 in Unit test refactor #67
• Pep8 naming partial compliance by @mfisher87 in Pep8 naming partial compliance #70
• Add basic GUI tests by @mfisher87 in Add basic GUI tests #72
• Add instructions on how to reproduce viridis by @stefanv in Add instructions on how to reproduce viridis #58
• Add typechecking by @mfisher87 in Add typechecking #73
• Drop support for Python 3.8, Qt5, matplotlib 3.4, scipy 1.7, numpy 1.21 by @mfisher87 in Drop support for Python 3.8, Qt5, matplotlib 3.4, scipy 1.7, numpy 1.21 #75
• Publish to PyPI automatically when publishing a GitHub release by @mfisher87 in Publish to PyPI automatically when publishing a GitHub release #79

New Contributors

• @robertguetzkow made their first contribution in Fix crash when the file save dialog is cancelled #54
• @maxnoe made their first contribution in Fix qt import, fixes #55 #57
• @mfisher87 made their first contribution in Modernize packaging config #63

Full Changelog: v0.9...v0.10