make hero kills count in the exp

[andreicde]

A strange thing I remarked with heroes is that they level on the number of hits they do, but if you do say 5 kills in the same time it still counts as 1 hit. So my suggestion is basically for hero to count kills too,unless the system is made on purpose to make leveling harder

[Konstantin Fomenko]

Yes it`s that way on purpose, and also so that easy units like goblins won`t give 1 XP for each kill.