Stability fix

Physics simulation could become unstable at high performance load (e.g. astronaut could fall through the terrain). The last patch should fix it (it lets more CPU time for physics calculation in such cases).

Two batch files are also added to the package: you can ran the application in HD and FHD resolution with them. If you have higher resolution than these and if you don't experience smooth gameplay then you may want to run those.

Other change is that several MP3 formats are supported with miniaudio e.g. the landing noise can be heard.