Changes to xmp-dwc

[herb]

Hello Phil,

after a long time I had to work again with DarwinCore tags: -xmp-dwc
I checked the "Qucik reference Guide" - https://dwc.tdwg.org/terms/ - in order to see whether changes had been done.
Yes there were changes in 2023.
They added some new tags , but also removed others.

I feeled free to modify ExifTool file DarwinCore.pm.

Newly added structure elements / tags I added to the corresponding structure and
removed tags I marked with a comment.
For details please see the modified file attached.

Best regards
herb

[Phil Harvey]

Hi Herb,

Great, thanks!

- Phil