Adds site invite created date

bookwyrm/migrations/0033_siteinvite_created_date.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.0.7 on 2021-01-05 19:08
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookwyrm', '0032_auto_20210104_2055'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='siteinvite',
+            name='created_date',
+            field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+            preserve_default=False,
+        ),
+    ]