Escape \ in __valid_nickname_regexp correctly (#63)

Handle exceptions from socket.accept() (#61)

Fix linting warnings

Prepare for version 2.3

Implement support for CAP for real

Improve type annotations

Reply to CAP LS command (#56)

Prepare for version 2.2

Use the build package instead of deprecated pep517.build

Add Python 3.10 and 3.11 to setup.cfg

Use pathlib.Path

Avoid using deprecated ssl.wrap_socket

Add some more type hints

Format code with Black

Use flake8 instead of pyflakes + pycodestyle