| ⇢ | A | Topic added |
| ⇢ | A | Subscribe::addTopics() added | |
| ⇢ | A | Subscribe::loop() added | |
| ⇢ | A | Topic::__construct() added | |
| ⇢ | A | Topic::setQoSLevel() added | |
| ⇢ | A | Topic::setTopicName() added | |
| ⇢ | A | Topic::getTopicQoSLevel() added | |
| ⇢ | A | Message::setRetainFlag() added | |
| ⇢ | A | Message::isRetained() added | |
| ⇢ | A | Topic::getTopicName() added | |
| A | ↛ | Message::mustRetain() removed | |
| A | ↛ | Message::shouldRetain() removed |