old_contents: # encoding: utf8
  from __future__ import unicode_literals
  
  
  # stop words as whitespace-separated list
  STOP_WORDS = set("""
  。
  、
  """.split())
new_contents: # encoding: utf8
  from __future__ import unicode_literals
  
  
  # stop words as whitespace-separated list
  STOP_WORDS = set("""
  。
  、
  """.split())
  
subject: Add newline