Version 0.02 - Original release ca. 17 Aug 2004
Initial implementation
Version 0.1 - Sun Oct 9 03:24:58 EDT 2011
Updated to push to github, cleaned up so I could live with it.
Eked out 3% improvement in execution speed through use of 'state' feature.
Found a minor bug in a test.
There's now relatively little difference in overhead between using a callback and not using
a callback, except the actual callback code itself.
Version 0.35 - See above version.
Consolidated a versioning error on PAUSE (which was my fault, I guess.)
Version 0.36 - Updated attribution
Removed common::sense