Rated 5 out of 5 stars

Would be great to have this in TB >= 60.x. How can we help to port this to work with the new version? Is there a GitHub repo or similar?

This review is for a previous version of the add-on (3.1). 

TB60 support has been submitted awaiting review. Let me know if you have any troubles. Thanks for your patience.

No need for GitHub at this time. You can download the extension, rename the file with a zip extension and peer into the source code for yourself if you'd like. Then you can re-archive the contents and install manually. Feel free to play around.