Fixed bug causing crash when locked entity is unloaded
Version 1.2 for 1.21+1.21.1 wouldnt work on 1.21.1
Fixed jitter at high FPS and made range for locking on larger.
Camera cannot move manually while locked on.
Lock on HUD will now be disabled if F1 is pressed.
Added Anti-Cheat: non-operator players will lose track of an entity if they cannot see it for 3 seconds.