version bumps and migration to django 2.2

dispatch/migrations/0002_auto_20150619_1124.py

@@ -29,6 +29,6 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='dispatcheraction',
             name='dispatcher',
-            field=models.ForeignKey(to='dispatch.Dispatcher'),
+            field=models.ForeignKey(to='dispatch.Dispatcher', on_delete=models.CASCADE),
         ),
     ]

dispatch/migrations/0003_auto_20150619_1637.py

@@ -17,6 +17,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='dispatcheraction',
             name='dispatcher',
-            field=models.ForeignKey(related_name='actions', to='dispatch.Dispatcher'),
+            field=models.ForeignKey(related_name='actions', to='dispatch.Dispatcher', on_delete=models.CASCADE),
         ),
     ]

dispatch/models.py

@@ -36,7 +36,7 @@ class DispatcherAction(models.Model):
         (FILE_TYPE, "Write to file"),
     )
 
-    dispatcher = models.ForeignKey('Dispatcher', related_name='actions')
+    dispatcher = models.ForeignKey('Dispatcher', related_name='actions', on_delete=models.CASCADE)
     type = models.CharField(max_length=16, choices=TYPE_CHOICES)
     destination = models.CharField(max_length=200)
     include_key = models.BooleanField(default=False)