Hello,
I've modified the script and updated it for blender 2.92. However The 'FAST' solver does not provide decent result while the 'EXACT' solver (which is not similar to 'CARVE' apparently) takes a very long time to proceed all the operations (or fail to provide a good result). This one also requires 'clean' sectors work and tolerate less freedom than the 'CARVE' solver.
So until they update or add a new solver, my conclusion is that we're stuck with the good old blender 2.79.
btw thank you for this tool!