Migrated from: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/867
Narrative
As a developer, I want a high-level API for basic image metadata, so that I don't have to worry about how the data is stored
Acceptance Criteria
- resolve pending issues with the API draft
- write better documentation
- start RFC on mediawiki.org about technical issues
- start RFC on Commons about metadata schema