Hide all slides but selected with data-visibility = "solo" setting

[kolibril13]

Similar to the data-visibility = "hidden" preference for a slide, it would be nice to have the setting data-visibility = "solo" to hide all slides but the current one.
This can be very useful when one has presentations with lots of slides.
In the development and debugging phase, one could then quickly jump to the current slide without manually scrolling through all slides. It would be even more amazing when the "solo"-mode could be activated by a tag somewhere on a slide, like e.g. <solo-slide>