Update to 1.39
    
    - New upstream release 1.39
      - It's 2019
      - Fix tests to skip on Encode failing (GH#17)
      - Tested on Z/OS (s390x - Hercules)
      - Test with new Module::CPANTS::Analyse
      - Add options -w/-b/-Z to csvdiff
      - Fix strict on streaming EOF
      - Now also tested with cperl