[D11] Checking in WIP ... alters the network format so that position messages are compressed as ProtoBuf messages, allowing us to send a byte with flags set for delayable & syncPosition. We no longer need to send the entityID as we can now partially read the entity message to see the entityId, groupId & prefabId ... Not caching entities with syncPosition set causes things to freak out... checking in now so I can rewind if needed.