Hey, good news!
I think he just paused the development, he didn't kill the project
Some quotes from the discord channel:
SEGameX 17/03/2020
Yes! I have posted the content that will be included in v0.8.6. So there will be fewer new posts. And progress is a bit slower than planned because I have some important things in life to do. Now, I'm focusing on completing it. Hope everyone can wait!
Maverick 28/11/2020
He's rebuilding his code so he can actually update more than once a year, which requires nearly all of the game's code to be reorganized and redone. It's taking forever, yes. But the upshot is once he's done this he can add content and update the game far easier and faster than in the past. He's sticking his nose into the code and not coming out pretty much; just trying to grind through it.
(not sure where he got that info, though)