We want to map existing Pressbooks book info fields to the schemas used by several prominent metadata specifications so that we can identify opportunities to generate metadata exports programmatically. End result should be something like this: https://docs.google.com/spreadsheets/d/1kg5GWJftTnUBj0cTB978gfI7dvSJ5sxDaej2ANE-oek/edit?gid=0#gid=0 for MARC, OAI-PMH, Dublic Core, OPDS, and Schema.org. Each element should have a dropdown field indicating whether that element is required, recommended, useful, etc.