The big news here is that the tool should now work under supported releases of Python 3 (and at least for now still with Python 2.7).
I'm marking this as no longer a "pre-release" because it occurs to me that I've been using this for real work on my dataset for more than two years. This isn't to say that there aren't rough patches, but it is doing what I need it to, and has allowed me to retire many older scripts.