Added support for multiple values in 'exact' Product Search expressions in public beta

You can now provide multiple values in an exact expression in Product Search queries. This allows simpler query expressions to search for multiple values on the same field. Previously, you had to use an or compound expression to formulate such queries. The exact expression with multiple values helps reduce the number of expressions that count toward the 50-expression limit for queries.

• [API] Added values field to exact query expression for Product Search in public beta.