| ⇢ | A | ErrorHandler added | |
| ⇢ | A | AbstractErrorMiddleware added | |
| ⇢ | A | CallableMiddleware added | |
| A | ↛ | ErrorHandler removed |
| ⇢ | B | GraphQL::process() added | |
| ⇢ | A | ErrorHandler::__construct() added | |
| ⇢ | A | ErrorHandler::addMiddleware() added | |
| ⇢ | A | ErrorHandler::handleError() added | |
| ⇢ | A | ErrorHandler::handleExecutionError() added | |
| ⇢ | A | AbstractErrorMiddleware::handleExecutionError() added | |
| ⇢ | A | AbstractErrorMiddleware::handleError() added | |
| ⇢ | A | CallableMiddleware::__construct() added | |
| ⇢ | A | CallableMiddleware::handleExecutionError() added | |
| A | ↛ | ErrorHandler::handleError() removed | |
| A | ↛ | ErrorHandler::__construct() removed |