Scroll when mouse is over the time axis

[smee]

Is there a way to have the "zoom on mousewheel" handler of the central timeline element also work while the mouse hovers over the time axis (or axes, if 'both' is set)?
Would it make sense to attach the 'scroll' listener from https://github.com/yotamberk/timeline-plus/blob/master/lib/timeline/Core.js#L268 to this.dom.bottom and this.dom.top as well?