Added SHOULD provide vocabulary declaration for RDF datasets.Changed the way BlueGriffon does line break to hopefully improve future commits
Minor tweak to ensure that it is the versioned dataset description that is linked to
Downgraded pav:createdXXX to SHOULD
Added cito:citeAsAuthority

Mechanism for citing a publication associated with a dataset
Reduced the requirements on the dataset description's metadata requirements
Added usage notes on title and description
Updated the published date