SH Cryo Grenade

1. Added option ("AllowAmmo") to have multiple Cryo Grenades as ammo (on by default)

1. Fixed some clipping issues related to func_tracktrains (not an universal solution but should work for most cases)

This is an optional update! It only adds the weapon to a separate category in the spawn menu ("SH Weapons") on Sandbox-derived gamemodes (DarkRP, etc.). You don't need to download this if you run this on TTT or something else.

1. Freeze now interrupts weapon thinking (reloading, etc.)
2. Changed a few clientside checks - should help with crashes
3. Fixed grenade projectile skin not being applied correctly on TTT

1. Added options AllowPlayerTextChat and AllowPlayerVoiceChat which disallow players from chatting when frozen (default: false)
2. Ice blast now goes through players

Initial version.