Comment fix
Ignore IntelliJ files
Add "LogSink" actor, which maintains vector clocks for each actor.
Merge branch 'master' of github.com:colin-scott/sts2-interposition
Merge commit '6d9910668ba5bc2d035026e7bb0026137e45346f' into colin-rbcast
Don't need AbstractScheduler: isSystemMessage uses a blacklist approach, not a
whitelist approach
Merge commit 'a01f6ed5bdfd2a9f24fc505121e0fe82e064eceb' into colin-rbcast
Make Logger a regular object rather than an actor