new_contents: # Generated by Django 2.1.7 on 2019-07-04 17:44
  
  from django.db import migrations, models
  import django.db.models.deletion
  
  
  class Migration(migrations.Migration):
      dependencies = [
          ('conferences', '0002_auto_20190511_0907'),
          ('submissions', '0001_initial'),
      ]
  
      operations = [
          migrations.AddField(
              model_name='submission',
              name='audience_level',
              field=models.ForeignKey(default=1,
                                      on_delete=django.db.models.deletion.PROTECT,
                                      to='conferences.AudienceLevel',
                                      verbose_name='audience level'),
              preserve_default=False,
          ),
      ]
  
subject: Add Audience Level migrations