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
"""
    Adds extras for all providers.
    By default all providers have the same extra name as provider id, for example
    'apache.hive' extra has 'apache.hive' provider requirement.
    """
    for provider_name, provider_requirement in PROVIDERS_REQUIREMENTS.items():
        EXTRAS_REQUIREMENTS[provider_name] = provider_requirement
add_extras_for_all_providers()
EXTRAS_DEPRECATED_ALIASES: Dict[str, str] = {
    'atlas': 'apache.atlas',
    'aws': 'amazon',
    'azure': 'microsoft.azure',
    'cassandra': 'apache.cassandra',
    'crypto': '',  
    'druid': 'apache.druid',
    'gcp': 'google',
    'gcp_api': 'google',
    'hdfs': 'apache.hdfs',
    'hive': 'apache.hive',
    'kubernetes': 'cncf.kubernetes',
    'mssql': 'microsoft.mssql',
    'pinot': 'apache.pinot',
    'qds': 'qubole',
    's3': 'amazon',
    'spark': 'apache.spark',
    'tableau': 'salesforce',
    'webhdfs': 'apache.webhdfs',
    'winrm': 'microsoft.winrm',
}
def find_requirements_for_alias(alias_to_look_for: Tuple[str, str]) -> List[str]: