hubAdmin 1.4.0

• Support v4.0.0 schema configuration of output types and output type IDs when creating config files programmatically. Specifically, whether an output type is required or not is specified via the is_required logical property whereas the output_type_id values as provided through the required property only (#53). In addition, output_type_id required value is now encoded as NULL instead of NA (#72).
• Programmatically created higher level config elements now have a branch attribute that can be used to create and validate objects against a schema which is still in development and has not been released to the main branch yet.
• Add dynamic checks to ensure derived_task_ids match valid task ID names to validation of task.json config files (#69).