omnipay/paypal — pull request #8 by v3labs (2014-03-17 21:41:52+00:00)
Title: PAYMENTREQUEST_0_NOTIFYURL does not work

PAYMENTREQUEST_0_NOTIFYURL must be set in the DoExpressCheckoutPayment method.
PayPal documentation says the parameter is ignored in other methods.
This pull request fixes this.