Drainers now are no longer affected by shield piercer item (so they always do their extra damage to shields).
Drainers now always prefer firing at shielded targets.
Any shot that pierces shields due to shield piercer will now have double the chance of stun or knockback to trigger.
Steam: Make auto screen size default to a larger size relative to your resolution, to aid readability for users who haven't yet looked at settings screen.