old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """Version info"""
  
  short_version = '1.3'
  version = '1.3.3'
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """Version info"""
  
  short_version = '1.3'
  version = '1.3.4'
  
subject: bump version