Thanks for all the great work on Dash!

I am wondering if there is support for the updatemenu function, as there is in plotly proper. My initial efforts have resulted in rendering of the custom menu/buttons on the graph, but no action takes place (and the React state does not seem to update).

Alternatively -- Is there a way to have the updatemenu GUI be linked to a callback in dash?

Edit:
It looks like there is support for the relayout function via updatemenus. I am wondering if this also supports (perhaps unofficially) updating the data/traces of a plot? Looking at the source code it looks like it is possible, since Plotly.restyle does take a traces argument, but I'm not sure if that can actually update the traces on the plot itself.