Station Demand

Adds a "Demand" card to the station window. For all town buildings in the catchment area of the station it shows, per product, the delivered amount and the total demand (e.g. 11 / 16), grouped into commercial and industrial goods, with the game's own cargo icons. Useful for setting line rates to match what the customers around a station actually need.Compatible with existing savegames, can be removed at any time.