Enhancement: Expose zoom to allow for programatically zooming

Enhancement:

Say you have two different EventDrops charts with the same start and end dates. How would the best possible way to connect these charts be? I am looking into modifying the source (and make a PR if I figure it out) in order to do so, as I couldn't find a good way to do this initially.

Have anyone done this? If so some help is greatly appreciated :)

Start by reviewing the EventDrops chart API and existing zoom behavior; the issue does not name files or tests. Determine how two charts with the same date range could share or accept zoom state, and consider the work complete when callers can programmatically synchronize their zoom.

Written by the indexing model from the issue text.