New fields on Shopify Function APIs

New fields have been added to all Shopify Functions APIs.

• The sellingPlanAllocation field is now available on CartLine.
• The title field is now available on Product, CustomProduct, and ProductVariant.
• The inCollections field on Product allows for checking membership in individual product collections.
• The hasTags field on Product and Customer allows for checking the presence of individual tags.
• The isAuthenticated field on BuyerIdentity identifies whether the customer is logged in.

For details on these fields, see the API Reference documentation for Shopify Functions.