Cleaned up RESEARCHES.XML.

Added some (temporary?) sounds for the weapon.

Once again, the weapon's description has been made more precise:

"The Stun Gun is a ballistic single-handed weapon designed to non-lethally incapacitate enemies. It fires charged bolts at a high enough velocity to allow penetration of the armor and/or skin of the target. Upon impact an electrical shock is released from the bolt, stunning living organism (and apparently also affecting electronics)."

-- Lowered projectile speed from 1500 to 1000.
-- Re-edited and improved the previously added in-game description: "The Stun Gun is a ballistic single-handed weapon designed to non-lethally incapacitate enemies. It fires projectiles at high enough velocity to penetrate the armor and/or skin of the target. These projectiles then release an electrical shock that stuns living organism (and apparently also affects electronics)."

Updated the in-game description of the Stun Gun:

"The Stun Gun is a ballistic single-handed weapon designed to non-lethally incapacitate enemies. It fires projectiles at high enough velocity to penetrate the armor and/or skin of the target. These projectiles then release a shock that stuns living organism (and apparently also affects electronics)."

Fixed some typos in the weapon's description.

Updated the weapon's description.

First release. Added the Stun Gun to the game. It currently uses the Ballistic Pistol graphics and sounds, as well as the Ballistic Pistol Ammo graphics, but will hopefully be getting its own graphics further on.