Weekly update 0.750 (breaks saves!)

Hi everyone, This week I fixed the save system to allow steam cloud, so it's now enabled. As a result, this update will break saves, so make sure to finish your run before updating. [b]Gameplay[/b] [list] [*] Steam cloud now enabled [*] Strong shot ability no longer suffers speed penalty [*] Commanders now gain some baton skills [*] Updated freeze effect on attack speed [*] New dungeon: Ice cavern. Fight a strong boss. Has a 50% chance of spawning to replace the ghost cave [*] New achievement related to that dungeon [*] Rangers gain some dagger skill [*] Increased speed for all mounts a little [*] Revised dark horses and pegasus mounts [*] Rage trait no longer shows up for war machines and mechanical units [*] Beholder ranged attack changed to cold damage [*] Certain ranged units now switch to melee when on guard [*] [/list] [b]Fixes[/b] [list] [*] Quick shot ability now uses 2 extra ammo, but suffers no damage penalty [*] UI now correctly shows freeze effects on stats [*] Fixed bug with kill leader event that would not start the battle [*] Various sound fixes [*] Bug with enemies with frost resistance and freeze attacks [/list]