new_contents: # Generated by Django 2.0.4 on 2018-04-16 11:44
  
  from django.db import migrations
  
  
  def re_save_tweets(apps, schema_editor):
      """
      Re-save all of the Tweets so that the HTML version of their text is updated
      using the newer version of Twython.
      """
      Tweet = apps.get_model('twitter', 'Tweet')
  
      for tweet in Tweet.objects.all():
          tweet.save(update_fields=['text_html'])
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('twitter', '0054_auto_20171113_1001'),
      ]
  
      operations = [
          migrations.RunPython(re_save_tweets),
      ]
  
subject: Add migration to re-save all Tweets