Sided packet processing.

Less IDs and more things that are good.. whatever they are.
I'm sure it's useful, probably, maybe, perhaps.
Bool + Guid serialization, Handshake packet

Also more side tweaks. Handshake packet impl. is complete. It also
includes the Handshake Refusal and both Client and Server Handshakes.

NOTE: Network Version MUST be incremented now! Structure has changed!