[12.0] [PORT] from 11.0 (#305)
[12.0] [PORT] from 11.0 (#305)

[11.0] [FIX] sale_three_discounts: changes in the if conditions (#304)

For the case that the value in one of the 3 discount was zero, the condition will be False an then go in to the if. But really dosen't want to do that. To avoid this behaivour, we compare using sets.
ingadhoc/sale,ingadhoc/sale,ingadhoc/sale,ingadhoc/sale