new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('course', '0006_fix_integrity_del_courses'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='course',
              name='participants',
              field=models.ManyToManyField(blank=True, to='user.UserInformation'),
          ),
          migrations.AlterField(
              model_name='course',
              name='queue',
              field=models.ManyToManyField(blank=True, related_name='waiting_for', to='user.UserInformation'),
          ),
          migrations.AlterField(
              model_name='course',
              name='teacher',
              field=models.ManyToManyField(blank=True, related_name='teacher', to='user.UserInformation'),
          ),
      ]
  
subject: add missing migration file