first implementation of mongo state factory
moved logging in line with the other Eve components
moved constants to the factory class
Fix return values on retry.
Fix Proxy setup.
adding concurrency update checking on mongo states
adapted logging to use java.util.logger
added javadocs comment and corrected logger factory input
-Provide the option to send byte-arrays i.s.o. strings, working towards transporting streams.
-Contain HTTP errors in the transport (don't send raw HTTP error pages to the agents)
-Some minor cleanups
Remove dependency on ZMQ for bundled setup, as ZMQ currently requires to much additional setup on the systems. Especially on Windows.
adding initialization via YAML config file
Create clean stacktraces from remote exceptions.
-Remove LogAgent Structure (Still needs replacement!)
-Change test-jetty run setup, needed fixing as jetty was running in different classloader from agents. (=double agenthost)
-Introducing a host management agent for answering non-existing messages.
-Reduce Agent dependencies in AgentServlet.
-Minor fixes
Merge pull request #25 from xvronny/mongodb

Thanks Ronny! I've merged this request. Let's discuss coming week if I need to backport it also to the 2.2.1. Would be quite easy, as mentioned before.
More logging removal (will be replaced with more generic solution)
Remove some minor warnings. Add full Javadoc.
Minor logging change
Make it easier to JSON-serialize a whole agent. At least don't include all services.
-Fix JSONRPCException nullpointer
-Trying various performance enhancements.
-Introducing RPCCallCache option.
Fixes, performance enhancements and cleanups.
Nothing major.