Jepsen 0.3.6

[Kyle Kingsbury]

Dear nemeses,

I'm pleased to announce Jepsen 0.3.6 is now available on GitHub and
Clojars. This is a sizeable release. It includes a significant
correctness bugfix for a rare bug that could make operations in the
history print with the wrong data. It also adds a new namespace for
composing databases, nemeses, and generators when working with systems
where each node has a different role. Kafka-style tests gain new powers
and are significantly faster. And we have the usual slew of small
bugfixes, dependency bumps, and quality-of-life improvements. Happy testing!

https://github.com/jepsen-io/jepsen/releases/tag/v0.3.6

--Kyle