0.01 - Thu Oct  6 01:35:32 UTC 2005
    First version, based on RGS's Runops::Switch.

0.02 - Sun Jun 17              2007
    Patched from chromatic's for my own used.

0.03 - Mon Jun 18              2007
    Finished initial distribution.
    Added functions:
     - Runops::Trace->trace( TRACE, CODE )
     - trace_code( CODE )
     - checksum_code_path( CODE )

0.04 - Thu Jun 21              2007
    Ought to build on threaded perls
    Traps die() now.

0.05 - Thu Jun 21              2007
    Actually require Digest::MD5
