Protocols.WebSocket client mode

[Marcus Agehall (nu med K-m�rkt fastighet och ny elcentral) @ Pike (-) developers forum]

Ah, good. Then I might just ignore 8.1 for now and implement the
client in 8.0.

Since it is an extension to the current module and doesn't really
change any APIs (it just adds new ones) I'm guessing that isn't a
problem.