old_contents: __all__ = ('version', '__version__')
  
  version = (0, 14, 999, 1)
  __version__ = '.'.join(str(x) for x in version)
  
new_contents: __all__ = ('version', '__version__')
  
  version = (0, 15, 0)
  __version__ = '.'.join(str(x) for x in version)
  
subject: Bump version to 0.15.0