| ⇢ | A | Payload::setContentAvailable() added | |
| ⇢ | A | Payload::getCustomValue() added | |
| ⇢ | A | InvalidPayloadException::notExistingCustomValue() added | |
| ⇢ | A | Payload::getCategory() added | |
| ⇢ | A | Payload::getThreadId() added | |
| ⇢ | A | Payload::getDefaultPayloadStructure() added | |
| A | ↘ | D | Payload::transform() got worse |