Dymoprint

What's Changed
* Switch to pure PyUSB interface by maresb in https://github.com/computerlyrik/dymoprint/pull/56


**Full Changelog**: https://github.com/computerlyrik/dymoprint/compare/v1.4.1...v2.0.0

Experimental USB-only mode and Windows support.

For more information, please see https://github.com/computerlyrik/dymoprint/pull/56

What's Changed

**NOTE:** the command-line argument `-m` for margin has changed meaning. Before it was the combined left-and-right margin with default value 112 = 56 × 2. Now it represents the single-sided margin, and thus has default value 56.

* Fix right margin by maresb in https://github.com/computerlyrik/dymoprint/pull/59
* Code cleanup by maresb in https://github.com/computerlyrik/dymoprint/pull/58 https://github.com/computerlyrik/dymoprint/pull/60 https://github.com/computerlyrik/dymoprint/pull/61 https://github.com/computerlyrik/dymoprint/pull/62

**Full Changelog**: https://github.com/computerlyrik/dymoprint/compare/v1.4.0...v1.4.1

What's Changed
* Add text alignment options by shoebill-dev in 53
* DymoPrint GUI by MooVx in https://github.com/computerlyrik/dymoprint/pull/54

New Contributors
* shoebill-dev made their first contribution in https://github.com/computerlyrik/dymoprint/pull/53
* MooVx made their first contribution in https://github.com/computerlyrik/dymoprint/pull/54

**Full Changelog**: https://github.com/computerlyrik/dymoprint/compare/v1.3.1...v1.4.0

Thanks to aleksas for adding the LabelManager 280 in 48. Please give feedback about how well this is working.

Also bumped Pillow pin to support v9.

- Readme upgrade