Release notes for 0.18.1

[Gallaecio]

No description provided.

[Copilot]

Pull request overview

This PR prepares the repository for the 0.18.1 release by updating release notes, modernizing the publishing workflow, and migrating version management configuration from .bumpversion.cfg to pyproject.toml.

Changes:

• Added release notes for versions 0.18.1 (unreleased), 0.18.0, 0.17.7, 0.17.6, and 0.17.5
• Migrated bumpversion configuration from .bumpversion.cfg to pyproject.toml with enhanced file tracking
• Updated GitHub Actions publish workflow to use trusted publishing and modern action versions

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
CHANGES.rst	Added release notes for 0.18.1 and backfilled notes for previous versions (0.18.0, 0.17.7, 0.17.6, 0.17.5)
pyproject.toml	Migrated bumpversion configuration from separate config file, adding automated CHANGES.rst date updating
.github/workflows/publish.yml	Modernized publishing workflow with trusted publishing, updated to trigger on tag pushes instead of releases
.bumpversion.cfg	Removed deprecated configuration file in favor of pyproject.toml

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.92%. Comparing base (abd1138) to head (084203f).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #102   +/-   ##
=======================================
  Coverage   88.92%   88.92%           
=======================================
  Files          15       15           
  Lines         894      894           
=======================================
  Hits          795      795           
  Misses         99       99           

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