its not dead
The big updates tend to take quite a while to come out. The latest version is available on their Patreon, but it's not exactly cheap. I think it's like a $15-20 tier for the latest update.
When the next big updates come out, the one that was previously for patrons will be posted publicly at some point.
Basically, they have 0.8 right now, and the public version is 0.7. When 0.9 gets released, 0.8 will be the new public version.