Add optional RG number as typed unitid, update subject, person, geography and corporate names
Add <language> for each language used. Add @type to irn IDs. Switch dates for conversion and publication, add conversion as profiledesc/creation.
Put <language> in <langmaterial> instead of <langusage>, fix <langusage> to English, add <origination> with provenance, add arrangement.
Add Genreform and uniform titles as access points, access and use restrictions, remove old origination field
Add Genreform and uniform titles as access points, access and use restrictions, remove old origination field (part 2)
Shuffle <unitid>, <origination> around to (more) correct order.