Allow Multiple Discount Codes to be applied

Americommerce has a limitation for how many discount codes can be applied to the same order at the time of checkout, and that number, is one. Please allow customers to enter more than just 1 discount code to their order. Sometimes we are running a promotion on two different items with two separate discount codes. Customers have complained and really it shouldn't be a hard feature to add. Woocommerce and Bigcommerce both have this feature.