Added ik_payment_method and ik_payment_currency to BaseInvoiceRequest

v1.1.5

Update version in composer.json

v1.1.4

Added ik_customer_{field} to BaseInvoiceRequest

v1.1.3

Added ik_mode parameter to BaseInvoiceRequest

v1.1.2

Signature helper now supports protocol field ik_payway_fields and generates correct signature.

v1.1.1

Update composer.json

v1.1.0

Added all methods of the API

v1.0.0

Initial commit