Log Message:
p5-Dist-Zilla: update to 6.012.

6.012     2018-04-21 10:20:21+02:00 Europe/Oslo
        - revert addition of Archive::Tar::Wrapper as a mandatory prereq (in
          release 6.011).
        - require a version of Config::MVP that adds the cwd back to @INC
        - record the perl version being used into META file
        - tiny fix to help output for "dzil new"