v2.2.0: - sync: skip sync dirty repos, warn instead.
- sync: change UI to report non-modified gist. - update repo/$gist_id/config for deleted gists - Fall back to `grep` if codesearch is not available.
- sync: change UI to report non-modified gist. - update repo/$gist_id/config for deleted gists - Fall back to `grep` if codesearch is not available.