New API call: PickItemBulk

A new call has been released, PickItemBulk, that enables users to pick products in bulk. You must first use getTokens to acquire user and tenant tokens (which are unique). Then you can use those tokens to pick products by SKU, warehouse ID, and location code within the warehouse. With ExpressPick, if your product is in one location in your warehouse, you can set ExpressPick to true and will not need the location. Sale ID also has its field if you want to trace a pick back to a sale. Use getWarehouses if you are unsure of the ID('s) for your warehouse(s).