It would be amazing if Highcharts could implement the ability to click, hold and drag the top and bottom areas of the Y axis on colum, area, line and stock charts in order to Zoom in and out of the Y axis (independently of the X axis).

Most stock charts allow you to click an area of the Y axis and for example by moving the mouse up, you zoom in on the Y axis (stretch) and moving the mouse down you zoom out on the Y axis (contract).

Also for example dragging the top area of the y axis up or the bottom area down would zoom with the center anchored to where the mouse is.

This would be massively appreciated!