Plone-sphinx-theme

New features

- Restore support for Mermaid. stevepiercy [Issue 38](https://github.com/plone/plone-sphinx-theme/issues/38)

New features

- Move the icon links from the primary sidebar to the page content footer. stevepiercy [Issue 37](https://github.com/plone/plone-sphinx-theme/issues/37)

Internal changes

- Adapt Makefile to use uv's preferred virtual environment location of `/.venv/`. stevepiercy [Issue 34](https://github.com/plone/plone-sphinx-theme/issues/34)
- Update project requirements. stevepiercy [Issue 35](https://github.com/plone/plone-sphinx-theme/issues/35)

New features

- Update styles and configuration to latest. stevepiercy
- Update styles from upstream Sphinx Book Theme.
- In todo directive, replace pencil icon with a clipboard list icon.
- For video directive, limit the width to 100% of the page content container.
- Add YouTube social icon to configuration.
- Rename Twitter social icon to X (formerly Twitter). [Issue 36](https://github.com/plone/plone-sphinx-theme/issues/36)

New features

Vale improvements

- Upgrade and pin Vale to v3. stevepiercy
- Follow some of Vale's suggestions and fix errors and warnings. stevepiercy
- Add GitHub Workflow to build docs and run checks on links, spelling, grammar, and style. stevepiercy [Issue 31](https://github.com/plone/plone-sphinx-theme/issues/31)

Makefile improvements

- Purged unused and broken Make build targets. stevepiercy
- Categorized Make targets with comments. stevepiercy
- Add test requirement `sphinx.ext.doctest` so that `make doctest` will work in some Plone projects. stevepiercy
- Add targets to correctly install, clean, and initialize the project. stevepiercy
- Updated documentation with correct make commands. stevepiercy
- Move release command from `README.md` to `contribute.md`. stevepiercy [Issue 33](https://github.com/plone/plone-sphinx-theme/issues/33)

Miscellaneous changes

- Switch to `uv` from `pip`. stevepiercy
- Fixed which changed files will build docs on RTD. stevepiercy
- Use a replacement for supported Python versions. stevepiercy


Bug fixes

- Add Python script to enable `make html_meta`. stevepiercy [Issue 32](https://github.com/plone/plone-sphinx-theme/issues/32)

New features

- Override sphinxcontrib-httpexample tabs background color for sure this time. stevepiercy [Issue 29](https://github.com/plone/plone-sphinx-theme/issues/29)

New features

- Override sphinxcontrib-httpexample tabs background color. stevepiercy [Issue 28](https://github.com/plone/plone-sphinx-theme/issues/28)