Update options function no longer exists, also no longer needed to this manual. Updating the options is handled by Jigoshop side version 1.3?

https://github.com/jigoshop/jigoshop/blob/1.2/gateways/paypal.php#L38
https://github.com/jigoshop/jigoshop/blob/1.3/gateways/paypal.php#L50