I do not know of its status, and whether or not it has merged with the official ndless tree
It has not yet.
Ahh... if only I had time to work on this
(I have college-like finals, aka CollegeBoard AP tests this week.)
If it cannot be done with standard bFLT (and I'm not aware it can be done), it's unlikely to be something we want to do: hacked up formats require non-standard toolchains, which are a maintenance burden in the long term
Well... I guess we could reserve a few numbers for ndless' core and particular important libraries, and then use some kind of ID manager for the rest. I just hope implementing all of this won't get too messy...