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
postgres = [
    'psycopg2-binary>=2.7.4',
]
presto = ['presto-python-client>=0.7.0,<0.8']
qubole = [
    'qds-sdk>=1.10.4',
]
rabbitmq = [
    'amqp<5.0.0',
]
redis = [
    'redis~=3.2',
]
salesforce = [
    'simple-salesforce>=1.0.0',
    'tableauserverclient',
]
samba = [
    'pysmbclient>=0.1.3',
]
segment = [
    'analytics-python>=1.2.9',
]
sendgrid = [
    'sendgrid>=6.0.0,<7',
]
sentry = [
    'blinker>=1.1',
    'sentry-sdk>=0.8.0',
]