0.5.x

• checkout_controller is obsolete now that Spree has been refactored to use REST.
• after_notify and after_success hooks are gone. See the README for how to implement them as hooks in the "fat" order model.

0.6.x

• Significant database changes, do not run migrations until you have backed up your payment data.
• Migrations will not port over your old payments, its suggested you write your own migration to do this in order to preserve legacy payments.