First stable release of py3make.
Compared to py-make, this release brings the following changes:
* Compatibility with Python >= 3.7 up to 3.12 (and hopefully beyond).
* Restored unit testing (migrated from Travis-CI to GitHub Workflows).
* Automated continuous deployment to TestPyPi and PyPi, with automated package testing to ensure the package is installable.
* Modernized package to PEP517 standard (with build isolation).
* Bugfix: Calling py3make without any argument now shows help, instead of calling the Makefile help, which caused a bug.