The CharacterParser is responsible for taking the response from a wiki object and turning it into something usable. Most of the logic from the original GranblueWiki object ended up here.
To use, you can instantiate a CharacterParser with a Granblue ID. It will create the wiki object for you using the provided character and fetch data when you call `fetch` on the CharacterParser.
You can also fetch data for all characters with the static method `fetch_all`
Currently a specific subset of fields are persisted, but in the future more can and probably should be saved
This is an adaptation and cleanup of the original GranblueWiki class. We extracted the object-related code into a parser, and this class is now only responsible for requests and fetching common property maps.
