Checkout a new Payment on PaymentsController#create
Move insertion of card to a customer's account into a controller's method
Debit customer via Balanced's API when checkout Payment
Don't include hidden use_card input when already have cards registered
Update contribution with payment's attributes on checkout
Expose debit information through a hash on Payment class
Skip update of User when update_address option isn't checked
Redirect to project's thank you page after finishing contributions
Create fixtures for params of successful notifications
Save Event when receiving a new Notification
Store successful debit notifications in DB
Expect Balanced::PaymentRequired exception when debiting
Rename fees block to :value_with_fees
Add field for pay payment fee option
Create classes to calculate fees of transactions
Include pay_fee as accepted attributes for payments

Complement to eff9c901b07393b4be66be323f6502ba71d3eb02
Use TransactionAdditionalFeeCalculator on engine registration
Use Transaction calculation classes on payment generation
Delete hold notification fixtures

We don't plan to do anything with them currently.
Store engine's name contributions' updates