ckanext-resourceversions allows creating versions of datasets in CKAN. Each version becomes a new dataset. When uploading a new file or changing the link of a resource, a new dataset with a new resource is created. Changing other information does not create a new version. Must be used together with ckanext-thredds to create versions of subsets and show relations between original dataset versions and subset versions. Each resource requires ‘newer_version’ and ‘subset_of’ fields. Extends CKAN’s package_search API with an ‘include_versions’ parameter. Developed by CCCA Data Centre (Climate Change Centre Austria). Release v1.0 titled ‘CADS 1.0’.