anchor.diff:    final orgMembers = const CsvToListConverter().convert(orgMembersContents);
     var googleContributors = List<String>();
     orgMembers.forEach((row) {
  -    if (row[3].toString().toUpperCase().contains('GOOGLE'))
  +    if (opts.onlyNotable &&
  +        (row[3].toString().toUpperCase().contains('GOOGLE')))
         googleContributors.add(row[0].toString());
     });
   
  
positive.code:           defaultsTo: false,
            abbr: 'm',
            negatable: false,
            help: 'show merged PRs in date range');
      try {
        _results = _parser.parse(args);
        if (_results['help']) _printUsage();
  
negative.code:   ArgResults _results;
    bool get showClosed => _results['closed'];
    bool get showMerged => _results['merged'];
    bool get onlyNotable => !_results['all-contributors'];
    DateTime get from => DateTime.parse(_results.rest[0]);
    DateTime get to => DateTime.parse(_results.rest[1]);
    int get exitCode => _results == null ? -1 : _results['help'] ? 0 : null;
  