I got to this point a few days ago, but I have been having problems generating the branches in the right direction, in the right place, and in the right pattern. I had it working, but then It broke again. Hopefully I will be able to release it within the next few days.
Yesterday, I spent about an hour working on this mod. I got it so that the growth blocks will grow new trees with growth blocks on top. Unfortunately, they wouldn’t grow continuously, due to a bug that I know exactly how to fix, but didn’t have the time yesterday.