Update notes for patch 1.2.3

Vox Machinae

Strap yourself into the cockpit of a robot seven times taller than a Tyrannosaurus Rex and prepare to do battle in Vox Machinae: the ultimate giant robot combat action-simulator for both VR and standard screens.

Balancing: [list] [*] Chainstorm: Takes less time to reach full spin-up, and it gains accuracy as it spins up. Heat cost has been reduced slightly, while projectiles were sped up a little. [*] Aftershock: shells travel significantly faster. Spread has been tightened a bit, and delay between shots fired has been reduced very slightly. Finally, the total reload time has been reduced while the arming distance was increased significantly. [*] Railgun: Reduced the heat dissipation upon firing. [*] Mallet: Reduced reload time and heat cost. Projectile now accelerate from slow to fast very quickly, making it a little easier to land targets. [*] Skythorn: Reduced reload and the projectile's lifetime. [/list] Bugfixes [list] [*] Changed spawning logic so that bots can pick Rook and Overhauls once again. [*] Fixed exit screen's "don't show again" toggle to actually work now. [/list] Improvements [list] [*] Aftershock's audio was remastered to have its timing be dynamic relative to gameplay changes. [*] Added support for Saitek Pro Flight Combat Rudder Pedals. [*] Added support for VKBsim Gunfighter MCG Ultimate Twist. [/list]