Future directions

TODO's: add support for multiple queues. So that it becomes possible to specify a queue for each node or action that is marked as asynchronous. Also it would be great to produce message for a set of queues in a round-robin. Since all of this should be configurable for both the JMS and the built-in messaging systems, this will require some thought on how to do all this configurations. The process definitions should not have to depend on any of the 2 possible implementations.