1.00 1999.06.16 - Initial release.

 1.01 1999.06.17 - Bug fix to 'clear' method. Added 'make test' support.

 1.02 1999.06.18 - Performance tweak to 'get' method.

 1.03 1999.06.21 - Minor docs tweaks. Removal of 'use attrs' for portability

 1.04 1999.10.08 - Bug fix to 'all_parms' method 

 1.05 2005.09.19 - Added GPL_License.txt, Artistic_License.txt, LICENSE,
                   Changes, Build.PL. Added pod build tests.
                   Split documentation into .pod file. Extended build
                   tests to 100% code coverage. Refactored code to make
                   it more inheritance friendly. Updated documentation.

 1.06 2005.09.20 - Fixed bad pod coverage build test.

 1.07 2020.10.10 - Relicensed under MIT License. Maintainer info updated.
                   Build tooling updated. Documentation updates