Wagtailcodeblock

What's Changed
* Wagtail 6 compatibility by gabigab117
* Update trove classifiers by FlipperPA

**Full Changelog**: https://github.com/FlipperPA/wagtailcodeblock/compare/1.29.0.1...1.29.0.2

What's Changed
* Confirm Wagtail 5 compatibility and update trove classifiers.
* Bugfix to remove nonexistent CDNJS files by fourfridays in 39

**Full Changelog**: https://github.com/FlipperPA/wagtailcodeblock/compare/1.29.0.0...1.29.0.1

What's Changed
* Use `pytest-django` for the test suite; switch to a Wagtail `Page` fixture.
* Upgrade PrismJS to 1.29.0.

**Full Changelog**: https://github.com/FlipperPA/wagtailcodeblock/compare/1.28.0.1...1.29.0.0

What's Changed
* Wagtail 4.2 support has been added and is required, by Arturinsh in PR 36.
* For Wagtail 3.x, `pip install wagtailcodeblock==1.28.0.0`
* Switch to `pyproject.toml` from `setup.py` for installation.
* Updates and improvements to README.

**Full Changelog**: https://github.com/FlipperPA/wagtailcodeblock/compare/1.28.0.0...1.28.0.1

What's Changed
* Wagtail 3.0 support has been added and is required, by bstepa in PR 32.
* For Wagtail 2.x, `pip install wagtailcodeblock==1.25.0.2`
* Copy to clipboard functionality has been added by ramiboutas in PR 33
* Upgrade to PrismJS 1.28.0 has been added by ramiboutas in PR 33.

**Full Changelog**: https://github.com/FlipperPA/wagtailcodeblock/compare/1.25.0.2...1.28.0.0

* Fixed a bug pulling in CSS when theme is overridden to `None`.