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0.03  Thurs Jul 31 2008
	- Added RandomWalk.pm.  It's suspicously like the "make"
	  code in Games::Maze.  I'm sure it's just a coincidence.
	  Plan to add Prim's and Kruskal's later.
	- Method adjusted_position(), added to Tour.pm, will
	  automatically add the {offset} co-ordinates to the
	  {position} co-ordinates.  Used by base and child classes
	  in the next() method.

0.04  Sat Aug 02 2008
	- First upload to CPAN failed to include helper.pl and
	  all the tests failed.  Added helper.pl to the MANIFEST.

0.05  Wed Aug 06 2008
	- Fairly bad POD documentation made less bad in Tour.pm.
	- This time remembered to add RandomWalk.pm to MANIFEST.
	  No tests for it yet.
0.06  Wed Aug 13 2008
	- Added {backtrack} attribute to RandomWalk to allow the saved list
	  of previous positions to be accessed randomly or as a stack, in
	  addition to the default queue.