old_contents: __version__ = '0.6.4'
  
new_contents: __version__ = '0.6.4'
  
  import logging
  
  # this prevents messages sent to sys.stderr if no logging was configured on application-side
  logging.getLogger('pyciss').addHandler(logging.NullHandler())
  
subject: add NullHandler to avoid unconfigured messages on sys.stderr