[Suggestion] Upgrade Units to different unit types.
Would it be possible to implement the option to upgrade existing units to a different unit type. For example you have archers on foot armed with a short bow, and then develope Horse mounted archers. Rather than have to make a new unit to replace the already leveled up units could there be an uption to upgrade the existing units to the new unit type?
For instance:
Archers w/ Shortbow --> Horsebowmen w/Longbow
Guardsmen w/warhammer --> Cavalry w/ mace
etc. Just a thought thanks.