new_contents: # encoding: utf8
  from django.db import models, migrations
  import django.utils.timezone
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('causes', '0004_auto_20140426_1442'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='cause',
              name='created_at',
              field=models.DateTimeField(auto_created=True, default=django.utils.timezone.now),
          ),
          migrations.AlterField(
              model_name='cause',
              name='modified_at',
              field=models.DateTimeField(auto_created=True, auto_now=True, default=django.utils.timezone.now),
          ),
      ]
  
subject: Use timezones in causes