must use xt_mode - blib has not been created yet
CONTRIBUTING file now generated
prevent share/CONTRIBUTING from being skipped
Dist-Zilla-PluginBundle-Author-ETHER-0.030

          - xt_mode must be used in [Test::Compile] when xt/ tests run before
            t/ (because 'make'/'Build' has not been run yet)
          - fixed broken gathering of sharedir