Minor corrections:
Changed version numbering scheme.
Removed use 5.010 since it is not necessery.
Corrected Changes file - date of first release was missing.
Minor changes
Simplified main constructor;
Changed MIN_PERL_VERSION to 5.006;
Simplify code and usage
One function takes one type only (hasref or list)
Small improvements:
Documented list method;
More info in return result of version method;
More doc for version method.