Wagtail-footnotes

- Add tests. (https://github.com/torchbox/wagtail-footnotes/pull/49) nickmoreton
Includes tox 4, coverage configuration.
- Drop support for Python 3.7 and Wagtail < 4.1. (https://github.com/torchbox/wagtail-footnotes/pull/49) nickmoreton
- Add the coverage report to the GitHub Actions summary. zerolab
- Switch to using [ruff](https://beta.ruff.rs/docs/) for linting. (https://github.com/torchbox/wagtail-footnotes/pull/52) zerolab
- Switched to using PyPI trusted publishing (https://github.com/torchbox/wagtail-footnotes/pull/53) zerolab
- Switched to using [flit](https://flit.pypa.io/en/latest/) for packaging (https://github.com/torchbox/wagtail-footnotes/pull/54) zerolab

- Add support for Wagtail 4.0
- Add GitHub Action to publish to PyPI on release by zerolab in (https://github.com/torchbox/wagtail-footnotes/pull/45)

- Add support for Wagtail 3.0 and drop support for all Wagtail versions before 2.15
- Dropped support for all Django versions before 3.2
- Removed support for Python 3.6
- Fix previews (https://github.com/torchbox/wagtail-footnotes/pull/24) - [jsma](https://github.com/jsma)

- Clean up old step from README - It is no longer recommended to define footnotes in `WAGTAILADMIN_RICH_TEXT_EDITORS`
- Add `footnotes` rich text feature automatically
- Clean up `RichTextBlockWithFootnotes`
- Make Footnotes unique on `page` <-> `uuid`

- Add `WAGTAIL_FOOTNOTES_TEXT_FEATURES` to add custom rich text features to footnote content
- Update requrements to `Django>=2.2, <3.3`

- Update requirements to `wagtail>=2.5, <3`
- Fix Javascript registering