Fix all of the nullable issues

Todo.txt

@@ -10,6 +10,7 @@ The server receive thread needs to push the user it was received from up the cha
 8. Each client can figure out what connections it needs to make or drop via the list                    Done
 10. When the TCP connection drops update the heartbeat list so all the clients remove the connection    Done
 11. Build a network cache table on the clients so obj's only send updates and not repeat packets
+12. User joined and left events are not implimented
 
 
 Set the network bubble distance [ render distance ] on the server and pass to the clients