Kieran Sobel

The help text for the `--who` argument was "Event title", presumably pasted from the line above. This PR corrects that and clarifies that it can be given multiple times to...

There is a dead link on the [Archive Vault](https://archiveprogram.github.com/arctic-vault/) page of the Archive Program website. The current link points to: https://www.loc.gov/law/help/us-treaties/bevans/m-ust000002-0269.pdf I don't know what the correct link should be,...