Changelog 2016/2/11: Use Unicorn instead of Puma - @dblock. 2016/2/11: Fix: wait for EventMachine reactor to start - @dblock. 2016/2/11: Use an OOB GC - @dblock. 2016/2/9: Defer start, much faster - @dblock. 2016/1/10: Backported changes from slack-metabot and slack-shellbot - @dblock.