Added a serializer for scala.None; fixes issue #74
Moved registration of None serializer from AkkaConfig to KryoSerializer;
needed to add serialization id for Enumeration#Value; added copyright
notice to None serializer
Added AkkaProxySpec to check whether issue #76 is resolved
AkkaProxy is now blocking unless optimizations are explicitly enabled.

Fixes issue #76
Merge pull request #78 from tmsklr/issue76testcase

Added AkkaProxySpec to check whether issue #76 is resolved
Reduced sleep time in AkkaProxy test to speed it up.
Merge pull request #75 from tmsklr/noneserialization

Added a serializer for scala.None; fixes #74
Fixed a bug where the coordinator could in some circumstances send a heartbeat before the message bus is fully initialized.
Preventing a heartbeat from being sent before the worker actor references are initialised.
Fixes issue #81.
Updated Akka version.
Updated Scala version to 2.10.1-RC3.
Updated Scala library.
Fixed bugs related to GlobalTerminationCondition
Updated to newest Scala/Akka/Kryo versions.
Simplified the Eclipse install instructions with the new Typesafe IDE
Updated Travis CI version number.
Showcase for some performance/memory optimizations.

Runs in 2083 milliseconds on my puny laptop.
Edge count is correct, but 5000 vertices are missing compared to the
description. Is their vertex count correct?
Graph loading is not really optimized (memory tradeoff and I don't have
enough time to do better). Removed idle wait time, because its
description in the stats was misleading.
Pure Asynchrnous might perform better. Don't have the patience for a serious A/B test.
Better results without JVM parameter tuning.