forked from CGM_Public/pretix_original
The rounding mode sum_by_net_keep_gross is supposed to be the consumer-friendly algorithm. However, some consumer-friendly prices are still impossible, such as 15.00 incl. 19%. Previously, the system would round to 15.01, because it's the gross price derived from the closest net price. With this PR, it rounds to 14.99 instead, because consumers like paying less more than they like paying more.