Some? LOL, I'd rather say you've changed and rearranged almost all Mephisto drivers, splitting many of them into new drivers, changed lots of layouts, renamed I/O ports or LEDs etc. ...
I've seen all your changes and collected all websites from https://git.redump.net/mame/log/ and I have now more than 30 pages from the last 2 weeks!

But all those changes (except the new Risc2500 and TascR30 drivers) didn't (and will not) make it into my CB-Emu package for several reasons:
Some of your changes are no longer compatible with MAME 0.220, i.e. they won't compile anymore without substantial modifications, and that would be an immense work (if possible at all).
And the other way would be to switch to the current MAME 0.230, but this would also mean that I had to implement again all my own changes and improvements into these new driver versions - a huge task too.

So I've now made a new MessUI version based on MAME 0.230 (after I managed to get the new GCC compiler version working, which is needed for 0.230), and this new version contains the current state of all MAME chess drivers (including all your last changes).
But this new version is independent of CB-Emu, i.e. it's a standalone program and can't be used in CB-Emu as MessExtra/MessChess, because lots of things won't work anymore (artworks, plugins, ...).
And this new MessUI will be the only version that I'll update regularly (whenever you make any further changes).
The CB-Emu project itself has now really come to an end - I'll only update it again when new ROM versions or new devices appear, and if I'm able to implement them in my MAME 0.220 system without having to completely change lots of my sources and taking the risk that many things won't work correctly anymore.