[0.75] [Suggestion] Implement Shift-Click
There are some occasions where I would like to use shift-click to mark all things from a starting point to an end point in
1) Moving units out off cities
2) Selling stuff to the shop (wolf skin, poiosn sacks, etc.)
3) Trading things
EDIT: Ctrl-Click already works with units, so it might be working in shops/trade, but shift-click (like windows everything between 2 marks) would be nice