Revision history for Business::Barcode::EAN13.
2.11  Jan Willamowius, Sat Mar 20 2021
    - update country data
2.00  Jan Willamowius, Sun Sep 8 2013
    - fix country codes for Germany and Russia (bug #37800)
1.01  Tony Bowden, Sat Sep 3 2005
        - Make build_prefix private
1.00  Tony Bowden, Wed Oct 27 2004
        - Upped to major version number
        - Tiny tweaks
0.06  Tony Bowden, Sat Sep 1 2001
        - Renamed to Business::Barcode::EAN13
        - tests moved to Test::More
        - First CPAN version
0.05  Colm Dougan, Tue Oct 17, 2000
        - Much faster checksum code
          (idea stolen from brian d foy's Business::ISBN. Found
           bug in his algorithm).
0.04  Tony Bowden, Fri Oct 6, 2000
        - added issuer_ccode
        - Minor code tweaks suggested by CD
0.03  Tony Bowden, Thu Oct 5, 2000
        - Rewrite of best_barcode to allow a preferences list
0.02  Tony Bowden, Thu Oct 4, 2000
        - Added exporting code, changed some logic, added comments,
          prepared for CPAN
0.01  Colm Dougan, Thu Sep 19, 2000
        - wrote validate, check_digit and best_barcode subs