Stripe integration

The version 2.3.0 is released.
There are 2 improvements for the multi-shipping scenario:

  1. The «Require the cardholder’s name?» feature now works in the multi-shipping scenario (in the same way as in the single-shipping scenario).

  2. The customer’s billing address is now passed to the createToken() Stripe.js method (in the same way as in the single-shipping scenario).