v1.2.4
Fix bagel distortion still exist after enter next level
Fix 466 boss, player cannot switch others to spectate
Fix shut them down, client cannot see heads
Fix 2D character, cannot switch to gun
Fix skeleton bosses, head aim wrong direction when it chasing and killing
Fix most of the connection and synchronize problem for bosses in chapter 1 & 2
Reduce the diffculty of chapter 1 boss 166