Slack digest for #dev - 2018-02-22

[Apache Pulsar Slack]

2018-02-21 21:13:24 UTC - David Fisher: PIP-15 looks really cool
blush : Sijie Guo
fire : Sijie Guo, Lewis Kaneshiro
+1 : Jai Asher
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2018-02-22 09:10:30 UTC - Jai Asher: Please try and find time to download, test 
and vote for "Pulsar 1.22.0-incubating Release Candidate 3"
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