[#341] Improvements on procedures.save.

- Update the cached representation of the procedure asynchronously on
  the `publish_entities` callback. This prevents stale records from
  being loaded from the db before the entities engine has persisted the
  new ones.

- Don't re-publish all entities when calling `procedures.status` at the
  end of `procedures.save`. This is both for performance reasons and to
  avoid sending to the entities engine stale representation of the data.

platypush/plugins/procedures/__init__.py

@@ -190,6 +190,9 @@ class ProceduresPlugin(RunnablePlugin, ProcedureEntityManager):
             ),
         }
 
+        def _on_entity_saved(*_, **__):
+            self._all_procedures[name] = proc_args
+
         with self._status_lock:
             with self._db_session() as session:
                 if old_name and old_name != name:
@@ -202,11 +205,12 @@ class ProceduresPlugin(RunnablePlugin, ProcedureEntityManager):
                             e,
                         )
 
-                self._all_procedures[name] = proc_args
+            self.publish_entities(
+                [_ProcedureWrapper(name=name, obj=proc_args)],
+                callback=_on_entity_saved,
+            )
 
-            self.publish_entities([_ProcedureWrapper(name=name, obj=proc_args)])
-
-        return self.status()
+        return self.status(publish=False)
 
     @action
     def delete(self, name: str):