- Change old build infraestructure (setuptools + setup.cfg/py) to poetry
 - Update security definitions: DHE-RSA-CHACHA20-POLY1305 was removed
 - Implement native module as a workaround for ecdh curve selection and X25519 compatibility
 - Change from deprecated importlib.resources API to new one
 - Improve documentation
 - Substitute format.sh with poethepoet
 - Rename create_client_ssl_context to create_client_authentication_ssl_context for clarification on functionality
 - Improve curve order, add X448 for openssl >= 1.1.1