Blazing Salvo and fork / chain support

I fixed a bug with Blazing Salvo forking in 3.23.1 (the projectiles did fork on hitting enemies, but then didn't travel any distance, just fell straight to the ground and exploded). Chain was working fine at that time.

I have tested in-game just now and both chain and fork do correctly work. They require one of the projectiles to hit an enemy (chain can occur from terrain if you have a stat to allow it), which is not guaranteed due to the randomness of the projectile's trajectories, but does reliably occur when they do collide with enemies.