Currently, if a PHP notice/warning/error occurs that is suppressed using the @ operator, the Airbrake ErrorHandler reports these errors as if they were not suppressed.

Reproduction steps:

$handler = new Airbrake\ErrorHandler($notifier);
$handler->register();

$foo = [];
echo @$foo[0]; // generates E_NOTICE

Expected result: no error is reported

Actual result: error is reported