* Added:
* Added property `terminal_data` to class `ApiAccountVerificationRequest`.
* Added properties `references` and `terminal_data` to class `ApiCaptureRequest`.
* Added properties `references` and `terminal_data` to class `ApiCaptureRequestForRefund`.
* Added property `terminal_data` to class `ApiIncrementRequest`.
* Added property `terminal_data` to class `ApiPaymentRefundRequest`.
* Added property `terminal_data` to class `ApiPaymentRequest`.
* Added property `emv_data` to class `ApiPaymentResponse`.
* Added property `terminal_data` to class `ApiPaymentReversalRequest`.
* Added property `emv_data` to class `ApiRefundResponse`.
* Added property `terminal_data` to class `ApiTechnicalReversalRequest`.
* Added property `card_entry_mode` to class `CardDataForDcc`.
* Added property `brand_selector` to class `CardPaymentData`.
* Added properties `brand_selector` and `cardholder_verification_method` to class `CardPaymentDataForRefund`.
* Added properties `brand_selector` and `point_of_sale_data` to class `CardPaymentDataForVerification`.
* Added properties `emv_data`, `encrypted_pin_block`, `is_response_to_pin_request`, `is_retry_with_the_same_operation_id`, `pin_master_key_reference` and `track2_data` to class `PointOfSaleData`.
* Added method `balance_inquiries` to class `MerchantClient`.
* Changed:
* Changed the type of property `point_of_sale_data` of class `CardPaymentDataForResponse` from `PointOfSaleData` to `PointOfSaleDataForResponse`.
* Removed:
* Removed property `point_of_sale_data` of class `CardPaymentDataForRefund`.
* Removed property `point_of_sale_data` of class `CardPaymentDataForResource`.
* Removed property `retrieval_reference_number` of class `PaymentReferences`.
* Removed property `terminal_id` of class `PointOfSaleData`.