new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.9.4 on 2016-03-19 00:21
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  import django.db.models.deletion
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('core', '0018_auto_20160318_2226'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='authornamevariation',
              name='author',
              field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.Author'),
          ),
      ]
  
subject: add migration