| ⇢ | A | Message added | |
| ⇢ | A | Body added | |
| C | ↘ | D | XmlElement got worse |
| ⇢ | A | Message::setBody() added | |
| ⇢ | A | Message::bodyPredicate() added | |
| ⇢ | A | Body::__toString() added | |
| ⇢ | A | Message::__construct() added | |
| ⇢ | A | Message::getBody() added | |
| ⇢ | A | Body::__construct() added | |
| ⇢ | A | Body::setLanguage() added | |
| ⇢ | A | Body::getLanguage() added |