Turned back on git integration, which should now be working correctly (including not bothering you too much, if you really don't want to backup your data to a USB stick on a daily basis).
Once A→Z+T knows about your USB drive, just make sure it's plugged in and visible before you start or stop A→Z+T, and A→Z+T will keep it up to date with your computer. You can also copy to and from USB, as needed.
This is more fully described at https://github.com/kent-rasmussen/azt/blob/dev/docs/COLLABORATION_AND_BACKUP.md
Perhaps not previously announced, you can also switch fairly seemlessly between testing and main branches, through the help menu.