Pass to yaxis max/min property the min/max values on the selected timeframe

[AurelReb]

Is your feature request related to a problem? Please describe.
Create a function with the min / max properties of yaxis, which would allow us to zoom automatically on the yaxis when we change the xaxis selection.

Describe the solution you'd like
In the function, it would be interesting to add an argument named minOnSelection so that the function looks like this:

{
  yaxis: {
    min: (min, minOnSelection) => //...
    max: (max, maxOnSelection) => //...
  }
}

for example, if a series includes y-values between 1 and 10, but the x-axis scale on this series includes only y-values between 5 and 7, min should be equal to 1 and minOnSelection should be equal to 5

The feature would be handy for many people I think.

[junedchhipa]

We have zoom.autoScaleYaxis property. Unfortunately, this property is not in the docs as it is not finished yet.
As you've already contributed to the initial idea of scaling Y-axis on zooming, I need to make it work for multi-yaxis too.
Thanks for another suggestion!

[junedchhipa]

Added the option chart.zoom.autoScaleYaxis which fixes the above issue.

[mattwensing]

Can this option also be used somehow for an area type of chart? Here's my options; I'm not seeing the desired behaviour:

      chart: {
        type: 'area',
        stacked: false,
        height: 350,
        zoom: {
          type: 'x',
          autoScaleYaxis: true,
          enabled: true
        },
        toolbar: {
          autoSelected: 'zoom'
        }
      },