Log Message:
Update from version 0.14 to version 0.18.

Pkgsrc changes:
- adjust dependencies

Upstream changes:
    [0.18]
        - Make sure we continue working on future Package::Stash
          versions (doy).

    [0.17]
        - Make sure the debugger author test is skipped for
          non-authors before the debugger is even loaded.

    [0.16]
        - Release all changes of 0.15 as part of a stable release.
        - Convert from Module::Install to Dist::Zilla.

    [0.15] TRIAL release
        - Use Package::Stash for the stash manipulation bits (doy).