Bug 2400

NearestTool_Change event is not fired since version 4.2020.9.28
To reproduce, just open the github demo at :
https://github.com/Steema/teechart-xamarin-forms-samples/tree/master/NearestPointTool

and check.

As requested by a customer :

Also, it would be very helpful if the new point/index can be passed via the event args in the EventHandler, such as:


	public class NearestPointEventArgs : EventArgs
	{
		public int Point { get; set; }

		public NearestPointEventArgs() { }
		public NearestPointEventArgs( int point )
		{
			Point = point;
		}
	}

Then the updated NearestPoint class would be:


	public class NearestPoint : ToolSeries
	{
		...
		public event EventHandler<NearestPointEventArgs> Change;
		...
	}