# PR Context

This PR introduces a plugin for the pdm package manager that automates
the release process.
It:
- updates the version number in the pyproject.toml according to the
provided rule (major, minor, patch)
- Updates the changelog: the unreleased section is converted to a
release section, a new unreleased section is introduced
- commits the changes, creates a tag and pushes both.

# Added

- add pdm release plugin