Tagged version 2.0.0 in change log and added python 3.12 to github workflow check

Author: ginic

CHANGELOG.md

@@ -6,7 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 You should also add project tags for each release in Github, see [Managing releases in a repository](https://docs.github.com/en/repositories/releasing-projects-on-github/managing-releases-in-a-repository).
 
-## [Unreleased]
+## [2.0.0] - 2024-05-29
 ### Added
 - Added example auto-built Sphinx documentation in the `docs` folder
 - Github workflow for running ruff linter
@@ -16,6 +16,7 @@ You should also add project tags for each release in Github, see [Managing relea
 ### Changed
 - All build and packaging switched to use only pyproject.toml
 - Minimum python version changed to 3.10
+- Github workflow checks python versions 3.10, 3.11, 3.12
 ### Removed
 - Removed setup.cfg