Oops, sorry, the link I gave you points two posts too far. It should have pointed
here. [Previous post fixed] And the fork (called officially BDSup2Sub "enhanced") can be downloaded
here.
BD3D2MK3D distributes v5.1.2 by Mjuhasz, the latest "official" version (because I want to be sure that there are no new bugs in the fork before distributing it).