old_contents: __version_info__ = ('3', '0', '1', '')
  __version__ = '.'.join(__version_info__[:3])
  if len(__version_info__) == 4:
      __version__ += __version_info__[-1]
  
new_contents: __version_info__ = ('3', '0', '2', 'dev1')
  __version__ = '.'.join(__version_info__[:3])
  if len(__version_info__) == 4:
      __version__ += __version_info__[-1]
  
subject: Bump to 3.0.2dev1