Placeholder issue for list of suggested 3D term additions

[baskaufs]

Here's a list generated from the Darwin Core Hour discussion on the topic of 3D terms:

https://github.com/tdwg/ac/blob/master/3d/proposed-3d-metadata-terms-from-dwc-hour.csv

Also, I wanted to stash the link to the paper on the subject of open digital 3D morphology data: http://rspb.royalsocietypublishing.org/content/284/1852/20170194

[baskaufs]

Information in this issue is under consideration by the 3D Task Group, so the issue does not need to remain open.