Revision history for Perl extension Language::Prolog::Types.
0.09  Feb 15 2005
        - added prolog_variables() factory (aka Vs()).
        - resolved bug in prolog_is_functor()
        - added rename method to variable objects. Use with care!.
0.08  Wed Jan 22 2003
        - Language::Prolog::Types::Internal::opaque opaque_class
          method now returns the correct class
0.07  Mon Jan 20 2003
        - prolog_is_list added to export list in Abstract module
0.06  Thu Jan 16 2003
        - opaque objects support added to converter
        - Language::XSB::Converter moved to
          Language::Prolog::Types::Converter so it can also be used from
          other modules like Language::Prolog::Yaswi
        - added new Opaque type
0.05  Sun Jan 12 2003
        - quoting added for functors names
        - bug in 'Factory' corrected: prolog_chain was returning
          wrong value sometimes when called in scalar context
0.04
        - requires only perl 5.6
        - Some Makefile.PL files corrected
0.03  Thu Nov 28 2002
        - Cleaned up for CPAN distribution
0.02  -
        -
0.01  Fri Nov 22 13:05:57 2002
        - original version; created by h2xs 1.22 with options
                -AX -n Language::Prolog::Types