old_contents: """Flow-based programming with python."""
  
  __version__ = '0.5.5'
  
  import logging
  
  PACKAGE = 'flowpipe'
  
  # create logger
  logger = logging.getLogger(PACKAGE)
  logger.propagate = False
  
  # create console handler and set level to debug
  handler = logging.StreamHandler()
  
  # create formatter
  formatter = logging.Formatter('%(name)s %(levelname)s: %(message)s')
  
  # add formatter to handler
  handler.setFormatter(formatter)
  
  # add handler to logger
  logger.addHandler(handler)
  
new_contents: """Flow-based programming with python."""
  
  __version__ = '0.5.6'
  
  import logging
  
  PACKAGE = 'flowpipe'
  
  # create logger
  logger = logging.getLogger(PACKAGE)
  logger.propagate = False
  
  # create console handler and set level to debug
  handler = logging.StreamHandler()
  
  # create formatter
  formatter = logging.Formatter('%(name)s %(levelname)s: %(message)s')
  
  # add formatter to handler
  handler.setFormatter(formatter)
  
  # add handler to logger
  logger.addHandler(handler)
  
subject: bump version to v0.5.6