[w3c/browser-payment-api] Update the shippingType option to not allow invalid strings (#416)

This allows better future extensibility, including for proposals such as #409 which give shippingType new meaning.

Closes #337.
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/browser-payment-api/pull/416

-- Commit Summary --

  * Update the shippingType option to not allow invalid strings

-- File Changes --

    M index.html (2)

-- Patch Links --

https://github.com/w3c/browser-payment-api/pull/416.patch
https://github.com/w3c/browser-payment-api/pull/416.diff

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/browser-payment-api/pull/416