old_contents: from timegaps import FileSystemEntry, TimegapsError
  from timefilter import TimeFilter, TimeFilterError
new_contents: # -*- coding: utf-8 -*-
  # Copyright 2014 Jan-Philip Gehrcke. See LICENSE file for details.
  
  __version__ = '0.1.0'
  from timegaps import FileSystemEntry, TimegapsError
  from timefilter import TimeFilter, TimeFilterError
  
subject: Add header and version to __init__.