Weitersager

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- Corrected project version in ``uv.lock``.

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- Updated Werkzeug to 3.1.1 (from 3.0.4).

- Updated coverage to 7.6.4 (from 7.4.4).

- Updated mypy to 1.13.0 (from 1.9.0).

- Updated pytest to 8.3.3 (from 8.1.1).

- Updated ruff to 0.7.2 (from 0.4.1).

- Use uv as package and project manager.

- Manage development, test dependencies via dependency groups and uv.

- Removed ``requirements[-{dev, test}].txt`` files. Use uv to install
dependencies.

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- Added support for Python 3.11 and 3.12.

- Removed support for Python 3.7 and 3.8.

- Changed authentication scheme name in authorization header from custom
``Token`` to the common ``Bearer``.

- Updated blinker to 1.8.2 (from 1.4).

- Updated irc to 20.5.0 (from 20.0.0).

- Updated rtoml to 0.11.0 (from 0.7.1).

- Updated Werkzeug to 3.0.4 (from 2.1.2).

- Renamed ``docker-compose.yaml`` to ``compose.yaml``.

- Switched from Python 3.9 to Python 3.11 Docker base image.

- Publish Docker images for platform ``linux/arm64`` (in addition to
``linux/amd64``).

- Migrated project metadata from ``setup.cfg`` to ``pyproject.toml``.

- Changed build system from setuptools to Hatchling.

- Switched code formatter and linter from Black to Ruff.

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- Introduced alternative endpoints using secret "channel tokens" as part
of the URL.

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- Fixed Werkzeug dependency missing in ``setup.cfg``.