Log Message:
Update to 1.20:

1.20 2015-04-25 NEILB
    - Switched to Dist::Zilla, in the process fixing RT#90701, RT#101548,
      and RT#101434
    - Reformatted this file as per CPAN::Changes::Spec

1.1_01 2015-04-18 NEILB
    - This release had the changes in 1.20 above, done first as a developer
      release to see what CPAN Testers said.