Version 0.4.5.2

Some smaller changes here:

• limit max fps limit to 130
• Improve visual feedback if hit (shields still ok)
• Add visual feedback (shaking) if hit (shields broken)
• Add sound if hit (shields broken)
• Reduce drag in case flaps are down
• Limit repeating console output
• Add possibility and option for gamma correction
• tweaking lighting of cockpit and aircraft models
• introduce gamma correction feature, in some pixel shaders and texture loading
• fix near clipping for terrain / rocks by closer near clipping plane, fixing the resulting z-fighting for rocks by backface culling
• do some changes for padlock if head movemnent is disabled
• do lock (an) enemy aircraft automatically at instant action start
• fix gun aiming helper (did not work properly / at all)
• terrain changes (mesh generation)
• make random number generator thread-safe
• several terrain changes (quiter but deeper detail levels at some places)
• do make change of screen parameters (resolution for example) more safe and comfortable