Revision history for Perl extension Hash::MultiKey.
0.06 Wed Jul  7 23:42:41 2004
    - Added SCALAR, introduced in 5.8.3.
    - scalar(%hmk) was not being tested properly, fixed.
0.05 Wed Mar 26 20:41:06 2003
    - Typo in POD was corrected
0.04 Sat Mar 22 10:27:21 2003
    - Authors' CPAN id were added
    - Email changed to address in cpan.org
    - THANKS section was added
    - Typo in POD was fixed
0.03 Fri Mar 21 22:03:28 2003
    - POD rewording
    - POD is more explicit about how keys work
    - Added t/17croak.t
    - Calls to croak() if key is [] were added
    - @mk notation in tests and documentation was unified
    - Tests use strict, warnings, and data structures instead of symrefs
0.02  Mon Mar 17 00:58:03 2003
    - Implementation overview was rewritten
    - Module was completely reimplemented
0.01  Sat Mar  8 13:15:05 2003
        - original version; created by h2xs 1.21 with options
                -XA -n Hash::MultiKey