First work on armor stands.
- The listener for tracking armor stands is temporary
- Armor stands spawn, but are not updating their properties (except from ignoring gravity)
- Equipping items works
- Armor stand spawning is not yet finished, currently they just spawn 2 blocks above the clicked block
- Armor stands do not collide with anything yet
Add upstream changes to prevent conflicts later
Inject into PacketPlayOutEntityMetadata sending to include Vec3 writing
Merge upstream again
Wow you guys need to stop committing so much...