Weapon and Troop stats

All defenses and troops should have lifetime stats that show how many times they have been destroyed, how many troops they kill, and how long they take to be destroyed, etc. This would allow the player to see which weapons are the best at defending and at what locations they perform the best at. The stats could also be used for troops with how long they survive, how many buildings they destroy, etc. This could help people see which troops perform best for diferent attack strategies.