API Implemented recursive versioned actions (publish, etc)
API Un-deprecate delete batch action
API Changed Versioned getters and setters for stages
BUG Inject query parameters during DataObject construction to prevent incorrect lazy loading
API Reduce GeneratedAssetHandler API
API Re-introduce Requirements::delete_all_combined_files();
API Re-introduce Requirements::flush()
API Combined files now uses new filenames distinguished by sha1 of sources