Create / support some sort of Exception handling code

[DavidGoodwin]

So if the adapter throws an exception, we default to some sort of set behaviour

See also :
https://github.com/Seldaek/monolog/blob/39637a5d0e98068d98189ce48a87f3dd61455429/src/Monolog/Logger.php#L453

function $somethingCallable = function(\Exception $e) : bool {
     error_log($e);

     // some clever logic here....

     return true; // return true so e.g. $rateLimit->check(...) returns true even if an exception occurred.
}

$rateLimit->setExceptionHandler($somethingCallable);