v2.1.0
- Endpoint https://secure.payu.com/api/v2_1/orders
- Simplification of request structure by eliminating nesting
- Status code 200 as only response after receiving notification
- Parameters starting with lowercase letters
- CurrencyCode field removed from refund create request
- CompleteUrl replaced with continueUrl
- Value of optional field extOrderId must be unique within one point of sale (POS)
- Minor changes and refactoring of functions