old_contents: 
  __version__ = '0.1.0.dev'
  __author__ = 'Yue Du <ifduyue@gmail.com>'
  __url__ = 'https://github.com/ifduyue/dotgit'
  __license__ = 'BSD 2-Clause License'
  
  
  def main():
      print('Yes, commander!')
  
  
  if __name__ == '__main__':
      main()
  
new_contents: 
  __version__ = '0.1.0.dev0'
  __author__ = 'Yue Du <ifduyue@gmail.com>'
  __url__ = 'https://github.com/ifduyue/dotgit'
  __license__ = 'BSD 2-Clause License'
  
  
  def main():
      print('Yes, commander!')
  
  
  if __name__ == '__main__':
      main()
  
subject: Use dev0