Edit: Fixed download link (was pointing to broken version)
I did a little bit of work on it the other day and it can now be used in 2.80. However, it’s still not where I would like it to be, so I haven’t made a new release; The basic functionality is mostly working again, but it still needs a lot of polishing and fixes.
You can download the latest Blender-2.80 branch zip from my github (direct download) and it should work with current 2.80 builds. I’ll try to get some more fixes in today and over the next week or so.
If you want to use vertex masking, you need to go into weight paint mode and toggle it there, because it’s not exposed in the vertex paint UI. I’ll probably add that directly to the addon UI, but I’ve made a bug report, so maybe it will get fixed directly in Blender soon.