Only data that can be obtained dynamically will be included; to request a coin, open an issue with links to sources, i.e., pages/APIs (disclaimer: I still might not add it). If you really want to get on my good side, you can write the crawler yourself; see the classes in data/_scripts for a general template; more detailed docs coming soon (disclaimer: probably not).
That data committed should not be taken as the source of truth; it's an arbitrary snapshot. Current data is what's live on the site / at the JSON API.