dragoman — PID redirection and content negotiation server

Usage: GET /{doi}  (e.g. /10.5281/zenodo.1234)

Content negotiation via Accept header or ?format= query parameter.
Supported formats: commonmeta, csl, datacite, datacite_xml, crossref_xml,
                   bibtex, ris, schemaorg, citation

For formatted citations:
  Accept: text/x-bibliography; style=apa; locale=fr-FR
  or: ?format=citation&style=apa&locale=fr-FR

HTTP 302  text/html or */* → redirect to landing page
HTTP 406  unsupported content type