Backwards compatibility fix
Backwards compatibility fix

thephpleague/omnipay-stripe,xola/stripe,david303/omnipay-stripe,andrewtweber/omnipay-stripe,studysocial/omnipay-stripe,xola/stripe,delatbabel/omnipay-stripe,studysocial/omnipay-stripe,andrewtweber/omnipay-stripe,delatbabel/omnipay-stripe,david303/omnipay-stripe,thephpleague/omnipay-stripe