Add APCA support/toggle?

[jimbateson]

Do you want to request a feature or report a bug?
Feature

What is the current behaviour?
N/A

If the current behaviour is a bug, please provide the steps to reproduce.
N/A

What is the expected behaviour?

If this is a feature request, what is motivation or use case for changing the behavior?
APCA is a fairly new and better way to calculate colour contrast. It will be introduced as the way to check in WCAG 3.0 but other tools such as Stark have started implementing a toggle so can check both WCAG conformance contrast and APCA.

Please mention other relevant information.

• Node version
• npm version
• Operating system
• CLI version
• Browser

[Myndex]

Hi @Pushedskydiver & @jimbateson
I like this tool, I think it has the potential to work well with APCA. If you have any questions or would like any assistance in incorporating APCA as an option, please don't hesitate to reach out.

It is available via NPM: npm i apca-w3

The Github repo.

A brief overview: Why APCA?