Ran Crump
Ran Crump
Also having the same issue here  
Will do some work on this this weekend, what is it exactly you're looking for? a remapper? wrapper? converter? etc?
I was messing around with some code that kind of did some of the things you were looking for but then I ran into this: https://github.com/EdyJ/blender-to-unity3d-importer/blob/master/Editor/EdysBlenderImporter.cs really cool importer
Running into the same thing with 2018 & 2019
I was using the most recent release not certain if it was or not
I was running into this issue when opening it: 
Bump^ still out of date