title: Paying an invoice with multiple credit cards in Stripe
body: <p>I have a scenario where a customer may have <strong>multiple credit cards</strong>. The customers are charged with a <strong>subscription fee</strong> and <strong>extras</strong> that depend on the customer behavior. The customer is charged <strong>once a month</strong> for both the subscription fee and the extras. The extras should be paid by the credit card that is selected according to certain rules. Basically, the invoice should be split between multiple credit cards (but there is no strict requirement that there should be single invoice).</p>
  
  <p>Any suggestions how can this be accomplished with Stripe?</p>
  
  <p>Thanks!</p>