Log Message:
py-relativetimebuilder: updated to 3.0.1

relativetimebuilder 3.0.1

Added

Development requirements handled by extras_require (install with pip install -e \ 
.[dev])
Pre-commit hooks, managed with pre-commit (install with pre-commit install)
Add readthedocs.yaml to make configuration explicit

Changed

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Imports sorted with isort
Following Keep a Changelog for this and future CHANGELOG entries
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Increase supported aniso8601 version to <11.0.0