Fixed price Cart Discounts achieved general availability status

After collecting feedback during the beta phase, we have moved Cart Discount type for fixed prices on Line Items out of beta. The status has been changed to general availability. With Fixed CartDiscountValue you can specify to which price you want to discount the Line Items.

This enables you to model cart promotions like these:

1. Final Sale - all articles of the 'Sales' category in the cart for 15€ each
2. Buy a pair of sunglasses for 10€ with coupon code SUNGLASSES (not limited to one pair, all pairs will become 10€)
3. Phone accessories are only $10 with the purchase of any new phone (not limited to one accessory, all accessories will become $10)
4. Get any 2 shirts for $50 each (not limited to two shirts, all shirts will become $50 if there are at least 2 shirts in the cart).