old_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  __version__ = '0.3.0'
  __author__  = 'Hieda no Chiaki'
new_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  __version__ = '0.6.0'
  __author__  = 'Hieda no Chiaki'
subject: Update version to 0.6.0