OK the deed is done. Post #2 updated with general release v0.0.4. If you downloaded an earlier version please replace it.
Calibre plugin v0.0.4 moved to
own thread (under new name ScrambleEbook - courtesy BetterRed). Let's see if it flies, limps or sinks without trace.
I'm not planning any further work unless/until someone reports a problem.
@BetterRed,
As suspected, the 'Restart calibre now' button is now available when using the calibre Plugin Updater.