CollectionItem: move version and encryption key to the item itself.

django_etesync/migrations/0022_auto_20200310_1547.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.0.3 on 2020-03-10 15:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etesync', '0021_auto_20200310_1439'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='collectionitemrevision',
+            name='encryptionKey',
+        ),
+        migrations.RemoveField(
+            model_name='collectionitemrevision',
+            name='version',
+        ),
+        migrations.AddField(
+            model_name='collectionitem',
+            name='encryptionKey',
+            field=models.BinaryField(default=b'aoesnutheounth', editable=True),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='collectionitem',
+            name='version',
+            field=models.PositiveSmallIntegerField(default=1),
+            preserve_default=False,
+        ),
+    ]