MFH: r509276 net-im/py-slackclient: Update to 2.1.0
aiodns is (was) actually an optional dependency. Add an ASYNCDNS option
for now until upstream work out a good name for it [1]
Changelog:
https://slack.dev/python-slackclient/changelog.html#v2-1-0-2019-07-01
Note: Missing from changelog, but also fixed:
https://github.com/slackapi/python-slackclient/issues/451
[1] https://github.com/slackapi/python-slackclient/issues/433
PR: 239462
Submitted by: <wcarson.bugzilla disillusion.net>
Approved by: ports-secteam (blanket: bugfix release)
UnifiedSplitRaw
