Discount per item

Consider this as a suggestion for how we should handle item specific discounts. Appreciate your thoughts @mikaellothman and @softarn !


Good observation!
That's correct, but's definitely something we could change. The only reason for choosing the above solution is to make the generics notation somehwat more endurable.

It's of course not a problem to change, so that the item line's discount can have a separate type.

Do you think we should do it?