Massive changes in fork - would like you to be aware

[jantman]

@robby-cornelissen I just wanted to make you at least aware of my fork. This is an absolutely wonderful project of yours, so thank you SO much for it!

I forked this last year to try and get it working with modern pybluez2... and then fell down a pretty big rabbit hole of refactoring into a class and Python package and then also into a reusable library, adding logging and argparse, replacing sys.exit calls with exceptions, printing multiple labels, USB support, and then adding a second command-line entrypoint for rendering specified text on a label, including rotated or rotated-repeated text, and then also adding Code128 barcode support.

I know this has really gotten quite far diverged from your repo, but figured that before I do any more work on this, I should ask if you'd have any interest in me reconciling my fork with the latest changes in your repo, and maybe contributing these changes back?