There was two problems I was running into:
1. The move packet changed slightly, using a different way to encode the
rotation. In hindsight, it should seem obvious they would encode it the
same way for CommonSpawn and ActorMove.
2. write_quantized_rotation did it's order of operations wrong, and
it would spit out nonsensical rotations.
Both issues are fixed and you can see the other player's rotation
correctly now!
