Sort of? I put together a working prototype, but never really got the graphical assets I needed to make it work properly. Galen's a super nice guy, but my impression was that he first got over-ambitious and blew the project up to be a small piece of a larger, more involved undertaking and then he over-committed to other (paying) work and had to drop the whole thing before ever getting to the bits and pieces that I actually needed. Me using crudely edited parts of screenshots from the PDF was good enough for testing purposes, but was never workable for a release.
It was also completely dependent on a separate cards UI module by another developer, who scolded me when I asked if it was OK to directly absorb it into my system because I'd miss out on new features he planned to add, but then he never made another update to it and totally abandoned it, which was extraordinarily frustrating.
What did get done is just quietly sitting in a private git repo, making me sad whenever I look at it. Updating it to support V12 would probably be too much work at this point, especially since I'd have to go through and update all the card module code as well.