old_contents: from models import *
  
  VERSION = ('0', '1', '0dev')
  
  def get_version(*args, **kwargs):
      return '.'.join(VERSION)
  
  __version__ = get_version()
new_contents: from models import *
  
  VERSION = ('0', '2', '0dev')
  
  def get_version(*args, **kwargs):
      return '.'.join(VERSION)
  
  __version__ = get_version()
  
subject: Upgrade to 0.2.0dev