Added a simple Record model
Added the new record classes.
Restored all lost changes.
More fixes... it's running on the cluster again.
Added sanity tests and fixed a bug in the absorb method
UUID serializer
Implemented Asterios' measurement management
Applied formatter to whole project.
Merged benchmark branch
Merged the memory hot fix
Added the first version of a map reduce benchmark with stateful UDFs
Deadlock was fixed by using an EventLoopGroup to each TaskExecutionUnit. This requires and aweful hack to convice Netty to do this with LocalChannels
Merge pull request #5 from Teots/master

Added: Statistics collection | Removed: Resource leaks, EventLoopGroup deadlock
Implemented the second half of the EventLoopGroup refactoring. Also several smaller deadlock issues have been removed.
Removed a resource leak in the WorkloadManager. Also the SanityClient has been enhanced with new tests significantly.
Merge pull request #6 from Teots/master

EventLoopGroup Refactoring
* Implemented a first version of the session concept.
added a session concept in the aura client api, optimized task deployment
removed TopologyRewriter and GenericDirectedGraph
tiny merge corrections