Switch to JSON-LD and implement data entry form

[strophy]

Love the idea of an open repository for collecting Dash media mentions! I'm not entirely sold on hosting it on GitHub due to the initial hurdle of creating an account and figuring out how to submit PRs, plus the non-intuitive data formats. Maybe a read-only Google Sheet populated using a publicly accessible form would be another option?

If you want to programmatically manipulate this data in the future I think following a more formal metadata specification will become increasingly important. The Schema.org JSON-LD NewsArticle format seems appropriate, if you choose a subset of these fields you could probably automatically generate an input form that validates data during input. This would make it much easier to describe e.g. podcasts with multiple guests, since we can simply make an array of "guests" objects. Google Developers has a great introduction to structured data formats as a starting point.