This package contains the generics system described in the /Scrap Your
Boilerplate/ papers (see <http://www.cs.uu.nl/wiki/GenericProgramming/SYB>).
It defines the "Data" class of types permitting folding and unfolding
of constructor applications, instances of this class for primitive
types, and a variety of traversals.

WWW: http://www.cs.uu.nl/wiki/GenericProgramming/SYB
