0.14.0

0.14.0

• Add Tap-to-Pay (TTP) support on Android and iOS
• Add checkTapToPayAvailability() and presentTapToPayActivation() (iOS) APIs
• Add PaymentMethod enum (cardReader, tapToPay) to SumupPaymentRequest
• Add products field (List<SumupProduct>) to SumupPluginCheckoutResponse (iOS + Android card reader)
• Add merchantCode, cardScheme, and errors fields to SumupPluginCheckoutResponse
• Fix iOS: checkout error message was discarded on failed transactions
• Fix Android: blank foreignTransactionId causing duplicate-transaction errors