Update 2018-10-23: Sound and Fury

• Added crew vision system: now crew members must spot and identify a target before the tank can engage
• Added reaction behavior: a tank that's hit with ordnance by surprise will guess the shooter's direction and begin looking for a target
• Added scanning behavior: tank gunners (and commanders where applicable) will sweep through fields of fire trying to visually identify targets
• Added platoon scanning behavior: tanks in a platoon will divide up sectors of fire according to each tank's position
• Added sound effects for turret traverse and traverse braking
• Added CITV unit to M1A2 SEP
• New interior sound effects for all main guns
• New reload sound effects for M1A2 SEP and T-90
• New engine sound effect for M1A2 SEP
• Reduced turret traverse speeds of most vehicles
• Reduced top speed of T-55
• Fixed a bug that could result in platoon member tanks driving away from the group at top speed forever
• Fixed an issue with M1A2 SEP turret side armor