Almost impossible within a few weeks, I' afraid.

And furthermore there were so many changes in MAME in the last months, so I'm not sure if I would be able to backport any new code to the previous (only 6 months old!) version 0.220.
(I even see in the MESS forum, that currently many devices in MAME aren't working correctly just because of all those recent changes, that's why the November release has been delayed).