Blinka-displayio-pygamedisplay

What's Changed
* warning about blinka displayio version by FoamyGuy in https://github.com/FoamyGuy/Blinka_Displayio_PyGameDisplay/pull/19


**Full Changelog**: https://github.com/FoamyGuy/Blinka_Displayio_PyGameDisplay/compare/2.3.0...2.4.0

This release fixes a threading related issue for Mac OS, and implemented the `root_group` property for Display. Thank you mountainstorm

This release removes the unused dependency `recordclass`. Thank you bablokb!

This release doesn't contain any functional change. Only a small tweak to remove a pylint disable that was made optional. Thank you tekktrik for looking into it and proposing options to fix!

This release contains:
- New auto-size capability. If you omit width and height arguments it will initialize to maximum size by default. Thank you bablokb
- Improved and updated CI and related infrastructure files. Thank you tekktrik
- Updated the example code in the readme to match the current API. Thank you jposada202020

pygame has been pinned to `>2.1.3dev8` in the requirements file in order to have it get a version that can work in the CI. Running locally with version `2.1.2` of pygame is supported as well.

This release adds the `flags` argument to the constructor. The value will get passed along to PyGame for use with FULLSCREEN and similar flags. Thank you bablokb!