    # apply some feature shine when crossing the feature flip boundary
    for my $case ( qw( enabled disabled ) ) {
        for my $feature ( sort keys %{ $feature_shine{$case} }  ) {
            my $feature_flipped = $feature{$feature}{$case};
            $feature_shine{$case}{$feature}->($doc)
              if $old_num < $feature_flipped         # code from before the feature
              && $version_num >= $feature_flipped    # bumped to after the feature
              && !$enabled_in_code{$feature}         # not enabling the feature
              && !$disabled_in_code{$feature};       # and not disabling the feature
        }
    }
