Histogram overlaid on line/area graph?

Hi there! Wonderful library - digging into it now and liking what I see so far.

I see that there's a way to do multiple lines/areas by way of multiple series in the passed data object. I also see that one can do "chart_type: 'histogram'" to get time series data in histogram format.

Is it possible to do a line together with a histogram, in one plot? The use case would be plotting cumulative counts of certain groupings of data with area, and then having a day-binned histogram overlaid on top.

Thanks so much!

Cheers, Rico