rename item.json -> item.cache

pandora/item/migrations/0004_json_cache.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.13 on 2018-06-19 20:24
+from __future__ import unicode_literals
+
+import django.core.serializers.json
+from django.db import migrations, models
+import oxdjango.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('item', '0003_jsonfield'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='item',
+            old_name='json',
+            new_name='cache',
+        ),
+    ]