| ⇢ | A | RequestFailedException added | |
| A | ↘ | C | Client got worse | 
| ⇢ | B | Client::throwFromErrorResponse() added | |
| ⇢ | A | Client::getErrorStringFromResponseBody() added | |
| ⇢ | A | Client::handleResponse() added | |
| ⇢ | A | RequestFailedException::__construct() added | |
| ⇢ | A | RequestFailedException::hasExtraErrorInfo() added | |
| ⇢ | A | RequestFailedException::getExtraErrorInfo() added |