* Handle errors when loading payment methods
* Use an error boundary
* Fix missing initial state in block error boundary
* Cleanup
* Only show internal user messages if it's admin or in editor
* Fixes
* Add friendly error message
* remove stripe.js registration because it is lazy loaded via the library used.
* refactor payment method registration to preserve registration order.
* register payment method asset handles as dependency on editor script as well.
* use cart data to provide country and currency_code
* remove files that likely got added back in from a bad rebase.
* modify canMakePayment config property so it must be a function
* Feed cart data to registered payment methods `canMakePayment` function.
This can then be used by payment methods for determining whether to show the payment method or not.
* implement new canMakePayment signature for cheque
Now canMakePayment doesn’t need to be a promise (payment method registry will handle wrapping all values in a promise to treat them as promises.
* implement canMakePayment as a function
* Rename and move existing checkout provider to checkout-state provider.
This allows us to re-use the interface exposed on this provider for cart and checkout blocks.
* refactor checkout provider to implement the new checkout state provider.
* Add Cart provider and export
* fix type-defs
* fix editor context provider and ensure all `isEditor` checks come from this provider
* fix type definition
* implement cart provider
* Add saved-payment-method options handling and improve payment method registration initialization
* add server side exposure of saved customer payment methods
* fix reducer for express payment method state
* fix default for customerPaymentMethods
Albert Juhé Lluveras
Darren Ethier