Can you add a test that the plotly_sliderchanged and plotly_buttonclicked events still fire with skip?

I've added a test to updatemenus but not to sliders. I can add to sliders, but it's a bit tricky (requires calculating slider click positions and working through DOM nodes) and I don't think it's a particularly high-value test since I've tested the defaults to make sure attributes are not filtered inappropriately and since the line that actually implements this is in the command code, not the component code.

To say that more clearly, as long as the string is coerced correctly, the component code is completely agnostic about what the value is, except to the extent that it feeds back into the state via the command observer, which doesn't apply to this case anyway since the command observer is tested to return that it doesn't know anything about the 'skip' command.

I've added a test to updatemenus but not to sliders

Works for me. All looks great! 💃