* Fix: Compatiblity with Fee Recovery so that the proper amount with fees is sent to the gateway.
* Fix: iATS requires two decimal places. When this gateway is active it forces two decimal places for donation amounts.
* Fix: Resolved issue with large amounts being sent with thousands separator which iATS' API doesn't expect and therefore would incorrectly process.
* Fix: PHP notice for using deprecated give_output_error() rather than Give_Notices().
