All networking functionality is now implemented (or appears to be, I haven't test extensively).
Any DeltaMessage data sent from one node will be forwarded to all other nodes.

MasterNode's add/receive interface is the same as ClientNodes. This took a bit of work
but I think it'll make the GUI code easy to do.

Awesome, happy 420
Merge branch 'master' of https://github.com/ian0608/whiteboard