old_contents: __version_info__ = (0, 2, 0, None)
  
  # Dot-connect all but the last. Last is dash-connected if not None.
  __version__ = '.'.join(str(i) for i in __version_info__[:-1])
  if __version_info__[-1] is not None:
      __version__ += ('-%s' % (__version_info__[-1],))
new_contents: __version_info__ = (0, 3, 0, None)
  
  # Dot-connect all but the last. Last is dash-connected if not None.
  __version__ = '.'.join(str(i) for i in __version_info__[:-1])
  if __version_info__[-1] is not None:
      __version__ += ('-%s' % (__version_info__[-1],))
subject: set version to 0.3.0 final