undeleted folder
[maven-release-plugin] copy for tag dnet-openaireplus-mapping-utils-3.2.13
simplified mappings
added mapping for relationships: contributor, part, supplement
mapping includes DOIs for datasets and preserve multiple original IDs
#807: cze/ces is wrong. ces/cze is the correct one.
ticket #1588 Rename "native" compatibility to "proprietary"
code2name map updated with the vocabularies in production