Update to 4.03
    
    - New upstream release 4.03
      - Add sereal cpanel_json_xs type (GH#110)
      - Fix bencode/bdecode methods in cpanel_json_xs (GH#111)
      - Overload ne operator for JSON::PP::Boolean (GH#107)
      - Add a missing semicolon to a documentation example (GH#104)
    - Switch upstream from search.cpan.org to metacpan.org
    - Add suggestions for Sereal::Decoder and Sereal::Encoder
    - Switch suggestion of Convert::Bencode to Bencode
    - Work around failing t/z_meta.t