jaymedavis/stripe.net — pull request #172 by tghw (2014-05-27 21:12:18+00:00)
Title: Add "plan" to StripSubscriptionUpdateOptions so we can change plans.

The multiple subscriptions code was missing a way to change the plan for a subscription. Adding PlanId to the update options makes it possible. https://stripe.com/docs/api#update_subscription