Hello,

Slack has released updates to its library and we can start using it for it. 

We especially like one change.

> slack_sdk has no required dependencies. This means aiohttp is no longer automatically resolved.

I've looked through the documentation and it doesn't look like a difficult task, but I think it's still worth testing.
More info: https://slack.dev/python-slack-sdk/v3-migration/index.html#from-slackclient-2-x

Best regards,
Kamil Breguła
setup.py
"""
    Command to tidy up the project root.
    Registered as cmdclass in setup() so it can be called with ``python setup.py extra_clean``.
    """
    description = "Tidy up the project root"
    user_options: List[str] = []
    def initialize_options(self):
        """Set default values for options."""
    def finalize_options(self):
        """Set final values for options."""
    @staticmethod
    def rm_all_files(files: List[str]):
        """Remove all files from the list"""
        for file in files:
            try:
                os.remove(file)
            except Exception as e:  
                logger.warning("Error when removing %s: %s", file, e)
    def run(self):
        """Remove temporary files and directories."""
        os.chdir(my_dir)
        self.rm_all_files(glob.glob('./build/*'))
        self.rm_all_files(glob.glob('./**/__pycache__/*', recursive=True))
        self.rm_all_files(glob.glob('./**/*.pyc', recursive=True))
        self.rm_all_files(glob.glob('./dist/*'))
        self.rm_all_files(glob.glob('./*.egg-info'))
        self.rm_all_files(glob.glob('./docker-context-files/*.whl'))
        self.rm_all_files(glob.glob('./docker-context-files/*.tgz'))
class CompileAssets(Command):