This package is as much about getting people to think about ways to
avoid using the C preprocessor, which isn't really suited to Haskell and
never has been, as it is about genuinely providing a set of functions
that people will use in production code.

That is to say, it isn't very good.

Areas of future development:
- catering for missing constructors we can't match against and the like
- quasiquoters to make using the thing less painful