Semantic Version v2.0.0 Specification

[Zeitsperre]

Pull Request Checklist:

• This PR addresses an already opened issue (for bug fixes / features)
  • This PR fixes Deployment policy and SemVer v2-compliant versioning  #1556 and fixes Drop bump2version for bump-my-version #1557
• Tests for the changes have been added (for bug fixes / features)
  • (If applicable) Documentation has been added / updated (for bug fixes / features)
• CHANGES.rst has been updated (with summary of main changes)
  • Link to issue (:issue:number) and pull request (:pull:number) has been added

What kind of change does this PR introduce?

• xclim now adheres to the Semantic Versioning 2.0.0 specification.
• bump2version has been replaced with bump-my-version
• The setup.cfg has been deleted; flake8 configurations have migrated to .flake8 file, and bumpversion configuration is now found in pyproject.toml.
• Fixed an issue with the .gitignore to properly ignore some autogenerated files.

Does this PR introduce a breaking change?

Yes. The versioning system has been adjusted so that patch versions are not augmented at every push to xclim code; instead, the build version is adjusted.

Other information:

https://callowayproject.github.io/bump-my-version/

[github-actions]

Note
It appears that this Pull Request modifies the main.yml workflow.

On inspection, the XCLIM_TESTDATA_BRANCH environment variable is set to the most recent tag (v2023.12.14).

No further action is required.

[bzah]

Looks good to me.
In the github action, I think you could have get the current_version and new_version using bump-my-version show argument (see here for example), but the regex works fine too.

Joyeuses fêtes !