old_contents: """
  ChatterBot is a machine learning, conversational dialog engine.
  """
  from .chatterbot import ChatBot
  
  __version__ = '0.5.2'
  __author__ = 'Gunther Cox'
  __email__ = 'gunthercx@gmail.com'
  __url__ = 'https://github.com/gunthercox/ChatterBot'
  
new_contents: """
  ChatterBot is a machine learning, conversational dialog engine.
  """
  from .chatterbot import ChatBot
  
  __version__ = '0.5.3'
  __author__ = 'Gunther Cox'
  __email__ = 'gunthercx@gmail.com'
  __url__ = 'https://github.com/gunthercox/ChatterBot'
  
subject: Update version to 0.5.3