Revision history for Tk::MARC.
------------------------------
1.1 January 17, 2004
    - renamed Tk::MARC::record     to Tk::MARC::Record
    - renamed Tk::MARC::field      to Tk::MARC::Field
    - renamed Tk::MARC::subfield   to Tk::MARC::Subfield
    - renamed Tk::MARC::indicators to Tk::MARC::Indicators
    - renamed Tk::MARC::leader     to Tk::MARC::Leader

1.0 January 16, 2004
    - original version, slurped the individual Tk::MARC::*
      packages into one module.