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0.03000	2007-23-01
	- Added dirty option
	- Added dirty POD
	- Added dirty test
	- Moved digest column to _digest_column_values

0.02000	2006-06-04
	- fixed digestcolumns()
	- documentation alterations

0.01000	2006-06-04
	- Added digestcolumns()
	- Documentation fixes
	
0.00001	2006-06-04
	- Initial release