Logarithmic sound, fixed Rescue Mode enemies, ads only show once per type — MH-Zombie Steam update #3933429

\Hey team, In time for the Madras Airshow on Friday and Saturday, I've uploaded builds for all OS's and VR: Fixed: Weapons now have logarithmic rolloff, so for example you will only hear the turret mines if you're close to them. Rescue/Initial mode of Marathon enemies weren't activating as AI until their 0-level of LOD was activated (so if you shot at them from a great distance they couldn't be hurt until their highest-detail LOD was visible). That's been fixed- at a price. Now, depending on difficulty, they can wander off on you and won't be where they initially spawned, and they're much more likely to off a civilian if you don't find them in time. Finally, I've made it so that the ad that shows briefly on the Home Screen on start will only show twice- once for the Redbubble page, and once for the iOS/Android version, per device you play on, since there is no online-cached save state. T...