| ⇢ | A | StagedMessageHandler added | |
| ⇢ | A | StagedQueueConsumer added |
| ⇢ | A | TriggerInstanceDispatcher.pre_ack_process() added | |
| ⇢ | A | StagedMessageHandler.pre_ack_process() added | |
| ⇢ | A | StagedQueueConsumer.process() added | |
| ⇢ | A | TriggerInstanceDispatcher._compose_pre_ack_process... added | |
| ⇢ | A | TriggerInstanceDispatcher._decompose_pre_ack_proce... added | |
| ⇢ | A | update_trigger_instance_status() added | |
| ⇢ | A | MessageHandler._get_queue_consumer() added | |
| ⇢ | A | StagedMessageHandler._get_queue_consumer() added | |
| A | ↘ | B | TriggerInstanceListCommand.run() got worse |