Hi! Thanks for posting, I appreciate it!
It is indeed on hiatus right now; I lost my job last year and as much as I wanted to dev The Diagnosis Game in that time, I needed to dedicate alot of my effort to finding new employment. I am in a new job as of January, and actually recently dove back in to try upgrading the rendering from Pixi v6 to v8, so it's steadily happening! :)