* Make Product Price component accessible
* Render checkout form step number before the content instead of after
* Announce changes in the Shipping Rates Control results
* Render product name before product price in the Checkout sidebar
* Verify error element id exists before using it in describedBy
* Avoid reading 'Choose a shipping method' if no shipping methods are available
* Hide product image from screen readers if there is no alt text and make link not focusable
* Move Checkout block buttons below the sidebar
* Simplify selector
* Remove ternary to make code easier to understand
* Fix rebase issue
* Fix step number not visible for payment methods
* Checkout class tidyup
* CheckoutProcessor placeholder
* ShippingMethodDataX to ShippingDataX
* Remove billing from checkout provider
* Remove billing data hook
* Remove billing from payment methods state
* Update typedefs
* Billing context
* Fix billing and shipping context persistence bugs
* Remove address form change
* Move phone back; another PR can deal with this
* Remove unused state
Albert Juhé Lluveras
Mike Jolley