old_contents: __all__ = ('version', '__version__')
  
  version = (0, 13, 10, 1)
  __version__ = '.'.join(str(x) for x in version)
  
new_contents: __all__ = ('version', '__version__')
  
  version = (0, 13, 11)
  __version__ = '.'.join(str(x) for x in version)
  
subject: bump version to 0.13.11