Continued objectification of stats [#43].
Some simple functions such as ~lines and ~words are able to use the API
to access and return data from the now objectified stats fields. Fields
that require calculation such as wpl and lincent are also able to use
this functionality.

Overridable add and get methods on fields allow custom procedures for
adding and retreving data from particular fields.

Other functions and leaderboarders are either unresponsive or return
errors as they are yet to be converted.