Not compatible with the refund plugin

[artyuum]

As discussed earlier on Slack, I'm opening an issue to point out that this plugin does not work with the sylius refund plugin.

After clicking on the "Refund" button on the order page, a full refund is initiated and it works, Stripe receives the request and proceeds to refund the customer:

But when going to the dedicated refund page (using the refund plugin), which allows making a refund (partial or full), Stripe will never receive the request and Sylius will still mark the refund as complete.

Maybe it's worth updating the README.md in the meantime while finding a solution.