	* Started subpackage "graph" which contains combinators for 	  operating on (non-tree) shaped graph structures.
	* Started subpackage "graph" which contains combinators for
	  operating on (non-tree) shaped graph structures.

	* Added "rootOfDiamond" and "rootOfCircle" as reusable
          node variables to the unit test fixture.


cwi-swat/jjtraveler,cwi-swat/jjtraveler