[0.06] Wed Feb 20 15:09:00 CET 2008
        - Fixed 'uninitialized value in ref-to-glob cast' error
          if unimport was used before.

    [0.05] Sun Aug 12 18:24:49 CEST 2007
        - Minor POD improvements
        - -except now accepts a single value too

    [0.04] Sat Mar 17 16:22:10 CET 2007
        - Added -except flag
        - Non-CODE type slots will not be removed

    [0.03] Sat Feb 24 22:34:55 CET 2007
        - Minor comment and POD cleanups
        - Tried to clarify how the module works

    [0.02] Tue Feb 20 00:38:24 CET 2007
        - Added unimport behaviour

    [0.01] Sun Feb 18 17:33:18 CET 2007
        - Initial Version