Fix a regression introduced by the package name change:
After changing it from rtslib to rtslib-fb to be able to publish on PyPI, the build system no longer correctly autodetects the rtslib package, as it matches the rtslib_fb.py file only.
2.2.1
This is just a minor release to sync with PyPI
2.2.0
Move to PEP-621, drop -fb from module name Refactoring code for Python >= 3.9 Fixes for issues found by ruff pycodestyle, pep8-naming and linter