old_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.9 on 2016-06-09 17:48
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  import django.db.models.deletion
  import django.utils.timezone
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('recipes', '0029_recipe_last_updated'),
      ]
  
      operations = [
          migrations.CreateModel(
              name='Signature',
              fields=[
                  ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                  ('signature', models.TextField()),
                  ('timestamp', models.DateTimeField(default=django.utils.timezone.now)),
              ],
          ),
          migrations.AddField(
              model_name='recipe',
              name='signature',
              field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='recipe', to='recipes.Signature'),
          ),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.9 on 2016-06-09 17:48
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  import django.db.models.deletion
  import django.utils.timezone
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('recipes', '0029_recipe_last_updated'),
      ]
  
      operations = [
          migrations.CreateModel(
              name='Signature',
              fields=[
                  ('id', models.AutoField(
                      auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                  ('signature', models.TextField()),
                  ('timestamp', models.DateTimeField(default=django.utils.timezone.now)),
              ],
          ),
          migrations.AddField(
              model_name='recipe',
              name='signature',
              field=models.OneToOneField(
                  blank=True, null=True, on_delete=django.db.models.deletion.CASCADE,
                  related_name='recipe', to='recipes.Signature'),
          ),
      ]
  
subject: Fix lint error