resolve rename migrations before adding columns

Author: dantownsend

piccolo/apps/migrations/auto/migration_manager.py

@@ -549,9 +549,9 @@ async def run(self):
                     raw()
 
             await self._run_add_tables()
+            await self._run_rename_tables()
             await self._run_add_columns()
             await self._run_drop_tables()
-            await self._run_rename_tables()
             await self._run_drop_columns()
             await self._run_rename_columns()
             await self._run_alter_columns()