Provides the visitor combinator framework as well as a few basic and
defined visitor combinators.
Framework
The framework of JJTraveler consists of the interfaces
Visitable and Visitor, and the abstract
class VoidVisitor.
Library
The library of JJTraveler consists of (concrete) implementations
of the Visitor interface. A few simple ones can be
found in the jjtraveler package. More advanced ones
can be found in some of jjtraveler's subpackages.