Shopify/active_merchant — pull request #559 by duff (2013-01-26 13:02:58+00:00)
Title: Stripe: Add support for application_fee.

When using Stripe Connect, Stripe allows you to pass an
application_fee parameter such that you can specify a fee on top of
Stripe's fees.

https://stripe.com/docs/connect/collecting-fees

Also made a remote test a bit more forgiving.