Revision history for Perl extension namespace.

0.01  20 Jun 2001
    - first alfa.

0.02  21 Jun 2001
    - added :export_tags and @export importing

0.03  25 Jun 2001
    - added "unimport"
    - bugfixed and optimized

0.04  25 Jun 2001

0.05  04 Oct 2001