old_contents: 
  
  """
      Functional package
      ==================
  
      It contains 6 functional modules:
  
      - Configuration.py
      - IO.py
      - ModificationEntities.py
      - ParsingEntities.py
      - StreamEntities.py
      - Wrappers.py
  """
  
new_contents: # coding: utf8
  
  
  """
      Functional package
      ==================
  
      It contains 6 functional modules:
  
      - Configuration.py
      - IO.py
      - ModificationEntities.py
      - ParsingEntities.py
      - StreamEntities.py
      - Wrappers.py
  """
  
subject: Add encoding