New event: "dataLabelSelection"

[antoniolopezmc]

Summary

Sometimes, especially in bar charts, a specific bar is too short to be clicked. In these cases, it would be nice to be able to click on its associated data label instead.

API Changes

chart: {
      events: {
      ...
      dataLabelSelection: undefined,
      ...
      }
}

Intended Use Case

We have a bar chart and want to click on an extremely short bar, but it is not possible because the bar is practically not visible. In these cases, its corresponding data label could be used to fire an event.