Symlink to a dir causes an issue with pre-commit hook

[autarch]

The problem seems to be that the pre-commit hook passes in this symlink path directly to $tidyall->process_paths. Then in process_path we check if $path->is_dir which returns true, and we error out because the commit hook didn't set the recursive flag to true.

I'm not sure what the best fix is here. I think it might be to simply handle symlinks explicitly by following them, or maybe at least add that as an option.