Just another small update with some balance tweaks.

Change-log Update v1.15

- Decreased fire rate on a few Primary, Secondary, and Ranged Weapons.

- Increased burst fire speed of Burst Pistol, Burst Rifle, and both Double Barrel Shotguns

- Increased the rate of additional zombie spawners after level 50.
  (Used to add 1 spawner every 10 levels, now it does 1 every 5 levels up to level 100).

- Added small chance for more than one Mutt or Brute (Riot Gear Zombie) to spawn at a time from level 50 on.