I've just finished some beta, er alpha testing and am looking at this next.
Edited to add (a couple of hours later)
I played with it, got very excited and decided I wanted to make my own, but it does not compile.

I started by truing to compile just the talk.txt that come with GPDL and it does not work. I am using the version that came with .914, which I think has been the same for a while, but I don't know how long.
I've been a bit more explicit in the other thread (linked to above).