BUG/MISSING FEATURE: Ensure state updates immediately after command.

[torbenconto]

Right now, state is not guaranteed to be mutated in the wake of a successful command.

EX:

{ chamber_light: off }
printer.SetLight(ChamberLight, LightModeOn)

chamber light still reports off until next pushall

[torbenconto]

Set some override value in SetFan on success