Maintainership

[rillian]

We've been using a fork of this as part of the speedreader feature in the brave browser for some years. Upstream has archived their repo, so we're now the sole maintainers for our use case.

I propose the following steps to clean up our code here:

• Review repo config and update to our normal practices
• Merge outstanding upstream changes to our branch
• Fix tests on our branch
• Add github action to run tests
• Merge outstanding upstream changes to main
• See if it's feasible to merge our changes into main
• See if former upstream wants to hand over the crates.io namespace so we can make releases.

[rillian]

Upstream does not want to transfer the kuchiki crate name, so we should find a new name for our fork.

[rillian]

We're renamed our version of the crate to kuchikiki and will start publishing under that name. repo rename and breaking the 'forked-from' link to archived upstream is pending.