Add missing migration and bump version to 0.4.6

Author: Cameron Lamb

grapple/migrations/0003_stubmodel.py

@@ -0,0 +1,24 @@
+# Generated by Django 2.2.3 on 2019-11-07 11:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('grapple', '0002_delete_pagepreview'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='StubModel',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+            ],
+            options={
+                'managed': False,
+            },
+        ),
+    ]

setup.cfg

@@ -3,7 +3,7 @@ name = wagtail-grapple
 author = Nathan Horrigan
 author_email = NathHorrigan@gmail.com
 description = A django app that speeds up and simplifies implementing a GraphQL endoint!
-version = 0.4.5
+version = 0.4.6
 url = https://github.com/torchbox/wagtail-grapple
 keywords =
   wagtail