New Feature: Support for Quickpay V10

This is more of an under-the-hood type of thing, but we've just upgraded to the latest version of ActiveMerchant, the underlying payment processor integration software, as well as added support for the latest version (v10) of Quickpay, our primary payment processor in Denmark. 

That means that you can now do subscription payments and auto-charge on the Quickpay V10 platform.