* Added maturin-based Python binding, to be deployed to https://pypi.org/project/vtracer/
* Removed poetry mentions from pyproject.toml, added README_PY.md for use on PYPI
* -> v0.6.1
-> moved Python bindings to bottom of converter.rs
* - README_PY.md needed to be inside the cmdapp directory to display on PyPi.irg
-> v0.6.3
* Support transparent color images
* Remove unnecessary conditional
* Add temporary git url to visioncortex dependency
* Use fastrand instead of rand
* Reduce the number of random iterations when keying
* Add heuristic to avoid expensive calculations for non-transparent input
* Add three additional special keying colours
* Add transparency check to some inner pixels