Jazzzny

There is a pretty good (i.e. up to date) mirror of UXP on GitHub at https://github.com/Basilisk-Development-Team/UXP-mirror if you are interested.

Supermium isn't the only Chromium fork that has been seemingly shadow-banned by Github. Chromium-Legacy, another fork targeting legacy systems (older macOS releases to be specific) has met the same "publicly hidden" fate a few days ago. I wonder why GitHub has decided to target these two similar projects...