Build 111120 - Revision 2

Actually thought to mark it as a brand new build...

• Safety feature (in one out of like 10000 kills, I'm not joking, an enemy carcass managed to clip through a wall due to one's spawn position, falling indefinitely and causing a stalemate) - carcasses now are checked against an additional floor level and destroyed on crossing it.
• PS VR - replaced the original IMU updater based on Madgwick's  article with completely my own. As the result, the headset feedback is faster, and much more stable.
• Minor shader optimizations
Had to do a hotfix, if downloaded right-off (on 11/21/20 that is), check the exe's build time, should be 6am-something, not 4am).