Date Taken ordering for Series#678

I started a new Series and selectively added things to it, going back a couple of years in time. When I was done, the Series was ordered oldest-first, and there was no way to order it newest-first. There’s the drag-drop UI, but I had added a large number of images, and using that would be incredibly tedious and time consuming. Please add some ordering options for Series - date taken and date posted, both forwards and reverse.