Update v0.0.281-prealpha

Added

• Improved assault rifle fire sound effect
  • And changed 'bullet hit terrain' sound effect!
• Level editor boundary planes no longer visible from the outside (too distracting)
• Increased assault rifle initial ammo from 90 to 240
  • While ammo pickups still spawn, I realized 3 ammo clips is simply too little
  • 240 total ammo is 8 clips

Fixed

• Fixed new 'Test Range' map not shipping with built game
• Fixed level thumbnail preview being wrong porpotions in level editor settings
• Improved CTF flag collision box
• Fixed visual bugs in voxel tool screen