al-025

As suggested in #126, this PR replaces the travis/tox testing setup with github actions. Currently the Python 3.12 test is expected to fail due to the deprecation of the imp...

Migrate _import_protocol to importlib

1

The current implementation of `_import_protocol` uses the deprecated [imp](https://docs.python.org/3.9/library/imp.html) library which was removed in Python 3.12. This PR reimplements `_import_protocol` with the superseding [importlib](https://docs.python.org/3/library/importlib.html) library to allow compatibility with newer...