Added credit card payment method
Several under the hood improvements

Fixed issue handling refund responses in exchange callbacks
Added support for payment methods Keuze Cadeau, Doenkado, Pix, Floa and Bancomat
Resolved currency mismatch affecting refunds

Fixed an icon issue
UTH fixes

Fixed instore(pin) issues

Improved handling paid order data

Added option expire-time for transactions
Fixed Klarna issue
Fixed passing products to Pay with same productId

Updated PHP SDK

Added new payment methods
Fixed an issue for downloadable products

Added validation for 4-decimal order amounts
Added setting to enable stock updates on refund
Fixed issue with non-ASCII characters in product descriptions

Added new payment methods