Skip Return Invoices When Outside of NA. (#10)
Skip Return Invoices When Outside of NA. (#10)

* Skip Return Invoices When Outside of NA.

If an order has been placed outside of North America, we don't want to
issue a return invoice.

* Logic Tweak To North American Order.

No longer rely on the country of a store but, work with hard coded store
values that can be compared directly on the order.

* Return If There Is No Sales Invoice.

If there is no sales invoice to the order, it doesn't make a whole lot
of sense to process a return invoice.

glossier/solidus_avatax,glossier/solidus_avatax