Log Message:
Update to 0.328
---------------
0.328     2015-09-03 20:37:50-04:00 America/New_York
        - get command description from Pod by default (Jakob Voss)
        - add a "--help" option to all commands by default (Jakob Voss)
        - add "command_groups" to group commands in listing (Jakob Voss)
        - fix the handling of "exit" in App::Cmd::Tester (Matthew Astley)
        - add 'show_version_cmd' option to enable display of 'version'
          command in command list. (John Anderson)
        - minor documentation improvements (Alberto Simoes, rjbs)