Catalan 0.2.2 Released

This release contains the first burst of new functionality under the new architecture. New workers exist for creating and manipulating multiple data queues and shuffling data nodes around, including new support for basic type conversion (e.g., String -> Date). A new worker command API greatly simplifies development of workers with many sub-tasks like the text and XML workers. A new worker metadata API opens the door for automated generation of required/optional property descriptions for all workers, including commands within a worker (which can have their own private property constraints beyond a worker).