beta v0.4 the achievement update

A bunch of achievements have been added, 34 to be exact. Units now level up after every single combat they survive and not only do they gain an increase in a random stat and a trait, but now they remove a negative trait if they have one. The chance for range to be the stat that is increased is increased by ~10%. This ends up giving the player much more room for meaningful and strategic decisions. The gap between just randomly throwing units into an army and carefully deciding who and where to fight has increased a lot. Multiple bugs were squashed that caused the game to crash. A bit of polish was added overall to the UI and the boot screen. There are multiple arenas that combat can happen in and there are options(!) Also fragile is a lot less horrible and doesn't tend to cause full party wipes anymore.