v3.18.1

Changes

• #1246 rtm_v2 api spins in infinite loop under gevent - Thanks @mattbillenstein

Document Changes

• #1244 #1245 Update aiohttp documentation sampleUpdate aiohttp documentation sample - Thanks @srajiang @DonDebonair

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• All issues/pull requests: https://github.com/slackapi/python-slack-sdk/milestone/63?closed=1
• All changes: https://github.com/slackapi/python-slack-sdk/compare/v3.18.0...v3.18.1