Add support for custom taxation rules

src/pretix/base/migrations/0083_auto_20180228_2102.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.10 on 2018-02-28 21:02
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0082_auto_20180222_0938'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='taxrule',
+            name='custom_rules',
+            field=models.TextField(blank=True, null=True),
+        ),
+        migrations.AlterField(
+            model_name='orderfee',
+            name='fee_type',
+            field=models.CharField(choices=[('payment', 'Payment fee'), ('shipping', 'Shipping fee'), ('service', 'Service fee'), ('other', 'Other fees')], max_length=100),
+        ),
+    ]