old_contents: # -*- coding: utf-8 -*-
  
  __version_info__ = (0, 2, 3)
  __version__ = '%d.%d.%d' % __version_info__[:3]
  
new_contents: # -*- coding: utf-8 -*-
  
  __version__ = "0.3.dev0"
  
subject: Switch to PEP 440 compliant version string and update to 0.3.dev0.