So, it's been almost a year with no update, so I figured I'd post an update.
No, the project is not abandoned. I have just had a very, very busy year, and will probably remain busy until at least mid or late summer next year.
Where I'm at right now is that I was close to releasing 0.3 and adding SLAs/spells to monsters. I was running into a weird bug that's honestly a little hard to debug from where it is in the code, and I've only been able to make time for a few days in the last year to even try to mess with it. Usually, by the time I am able to get around to it I've had to spend most of the time allotted to figuring out exactly what problem I was having in the first place and redoing my old tests.
I may or may not add a Pathfinder 2 mode to the system. Ever. It's not high priority (because honestly from what I've seen it looks like garbage). One day I would like to see this program support most well-known TTRPGs, but right now the highest priority is getting full PF1e monster support (minus some PC stuff), a working GUI mode, the ability to give monsters core class levels, and a working Windows version (which should be more or less trivial now that I have a proper Windows install and will be either in 0.3 or 0.4). A few other features would be nice, but I expect most of the other features I'd add are either trivial to implement or directly related to those 3 things I mentioned.
If I get free time to work on this before summer, I expect to spend it working on an unrelated project. Most of my summer will probably be split between this other project and PFRPG, but with how my life has been going recently, any plans I make are tentative at their absolute best.