Log Message:
Update to 0.20

Upstream changes:
0.20    2013-04-07
        - change file dates changed to meet W3CDTF standards.
        - reworked Makefile.PL for clarity.
        - upgraded to Test::CPAN::Meta::JSON for tests.
        - added meta.JSON.
        - updated test suite.
        - added repositories to Meta files.