options :: [(FlagMaker, String, Mode, String)]
options = [ (arg, "repositories", Optional, "Target Repositories (separated by comma)"),
            (arg, "login", Optional, "Github login ID"),
            (arg, "file", Optional, "Repository config (per line '<user>/<repository name>'"),
            (arg, "output-format", Optional, "Output file format"),
            (arg, "date", Optional, "Filter by date"),
            (arg, "author", Optional, "Filter by author")
          ]
options :: [(FlagMaker, String, Mode, String)]
options = [ (arg, "repositories", Optional, "Target Repositories (separated by comma)"),
            (arg, "login", Optional, "Github login ID"),
            (arg, "file", Optional, "Repository config (per line '<user>/<repository name>'"),
            (arg, "output-format", Optional, "Output file format"),
            (arg, "date", Optional, "Filter by date"),
            (arg, "author", Optional, "Filter by author")
          ]
options = [ (arg, "repositories", Optional, "Target Repositories (separated by comma)"),
            (arg, "login", Optional, "Github login ID"),
            (arg, "file", Optional, "Repository config (per line '<user>/<repository name>'"),
            (arg, "output-format", Optional, "Output file format"),
            (arg, "date", Optional, "Filter by date"),
            (arg, "author", Optional, "Filter by author")
          ]