Auctioneer price/PointBid.getDemandAt(Price) does not result in equalibrium

[wilcowijbrandi]

There seems to be an issue with PointBids and the equalibrium price. The source of this problem lies probably in the combination of ArrayBids and PointBids, which do not have the same precision. I create a simple unit test to demonstrate the problem:
https://gist.github.com/wilcowijbrandi/ce156c84464dcffa3554

A temporary solution is to transform a PointBid into an ArrayBid and then call the getDemandAt method. See for example flexiblepower/fpai-apps@a869413.