Simplify the future of our migration history

src/pretix/base/migrations/0120_auto_20190509_0736.py

@@ -0,0 +1,76 @@
+# Generated by Django 2.2 on 2019-05-09 07:36
+
+from django.db import migrations, models
+import django.db.models.deletion
+import jsonfallback.fields
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0119_auto_20190509_0654'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='cartposition',
+            name='attendee_name_parts',
+            field=jsonfallback.fields.FallbackJSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='cartposition',
+            name='subevent',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.SubEvent'),
+        ),
+        migrations.AlterField(
+            model_name='cartposition',
+            name='voucher',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.Voucher'),
+        ),
+        migrations.AlterField(
+            model_name='event',
+            name='is_public',
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AlterField(
+            model_name='invoiceaddress',
+            name='name_parts',
+            field=jsonfallback.fields.FallbackJSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='item',
+            name='sales_channels',
+            field=pretix.base.models.fields.MultiStringField(default=['web']),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='sales_channel',
+            field=models.CharField(default='web', max_length=190),
+        ),
+        migrations.AlterField(
+            model_name='orderposition',
+            name='attendee_name_parts',
+            field=jsonfallback.fields.FallbackJSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='orderposition',
+            name='subevent',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.SubEvent'),
+        ),
+        migrations.AlterField(
+            model_name='orderposition',
+            name='voucher',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.Voucher'),
+        ),
+        migrations.AlterField(
+            model_name='staffsessionauditlog',
+            name='method',
+            field=models.CharField(max_length=255),
+        ),
+        migrations.AlterField(
+            model_name='user',
+            name='email',
+            field=models.EmailField(db_index=True, max_length=190, null=True, unique=True),
+        ),
+    ]