Slack digest for #dev - 2019-03-13

[Apache Pulsar Slack]

2019-03-12 16:13:36 UTC - Sijie Guo: @Matteo Merli can you please review this 
pr when you have time? <https://github.com/apache/pulsar/pull/3752>
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2019-03-12 16:14:05 UTC - Matteo Merli: will do today
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