0.1.0   Wed, 17 Jan 2001 19:11:40 +0000
        First release

0.1.1   Thu, 18 Jan 2001 15:52:08 +0000
        Change license from GPL to GPL/BSD, add AUTHORS

0.1.2   Thu, 18 Jan 2001 19:38:30 +0000
        Add ChangeLog
        md5_step_4_f optimised
        md5_step_4_g just calls md5_step_4_f after shuffling arguments