might as well inline this
test required plugins here too
explain why versions are never likely to make it into the options
make dependency tests non-fatal
avoid bashisms to avoid failure on ubuntu, which uses dash
new [InstallRelease] complains if there is no Makefile.PL nor Build.PL, stopping our use of installer = none in tests
Dist-Zilla-PluginBundle-Author-ETHER-0.028

          - injected t/00-check-deps.t no longer bails out when failures are
            encountered
          - the shell command used to update the local .ackrc is now POSIX
            shell compatible
          - fix unit tests that broke when Dist::Zilla::Plugin::InstallGuide
            1.200001 was released (which retroactively broke the 0.027
            release)