Callback when animation is finished

[paulmelnikow]

Is your feature request related to a problem? Please describe.

I'd like to display some navigation elements on top of the chart, but only when it finishes rendering.

Describe the solution you'd like

An .animationFinished() callback.

Describe alternatives you've considered

I'm using setTimeout(() => {}, 800) right now, though it would be better encapsulation if I weren't pasting this number from the component's source code.

Additional context
N/A