On the Product Hunt page, @aub posted this specific feedback on features he is looking for.
“I need axial zoom like this: https://www.amcharts.com/demos/date-based-data/ (specifically on the X).
(I’m a product designer so take all this fwiw / its free advice 🙂 )
I think the interaction could be achieved with click+drag / pinch for zooming and then double click or double tap to get back out. shift+drag or pan could allow for panning. <- so you might not need much UI for this or users could bind the callback to a button or something for the double-click/double tap reset. (like the first one here http://dygraphs.com/gallery/#g/interaction)”