New archive function works fine but it could use some cleanup:

• Deduplicate code in the new functions (they share a lot of the same functionality).
• Set up code coverage reporting for the archive tests.
• Add proper clarg parsing (or move the command to a separate repository).

libgin/doi.go:DOIRegInfo has been marked in the code as "Deprecated and obsolete" but still seems to be in use in G-Node/gogs to display the content of a datacite file.

Either the deprecation notice should be removed or the necessary code should be moved to G-Node/gogs.

Update the RenderAuthor function in doi.go to include spaces after each comma and semicolon.

When parsing Author ID for dataset registration, move the ORCID (and other ID) parsing to its own function and write tests.

The NewAFile() function infers the key from the path in the contents of the file and then runs a search through the directory tree to find the matching filename. We should instead use the new ContentLocation function:

Support RRID as reference identifier besides DOI, PMID and arxiv.

Currently the information in funder is split at the comma character. Since this character has been used in the past in the funder name entry, use semi-colon instead.

Keep split on comma as fallback and backwards compatibility.

Required for gin-doi issue #84.

When the funding information contains no split character but has an entry, set funderName as default.

Currently it seems to default to awardNumber.

Required for gin-doi issue #83.