Handle onBrushDomainChangeEnd on drag and pan of brush.

[jeloagnasin]

My previous PR didn't account the drag and pan actions. Sorry about that.

[boygirl]

@jeloagnasin sorry for the delay. This works well for me. Thanks!

[jeloagnasin]

@boygirl, I think I made a huge mistake. But I'm not really sure.

In this code:

    } else if ((allowDrag && isPanning) || (allowResize && isSelecting)) {
      if (isFunction(onBrushDomainChangeEnd)) {
        onBrushDomainChangeEnd(currentDomain, defaults({}, mutatedProps, targetProps));
      }
    }

I'm pretty sure that the onBurshDomainChangeEnd is being called when the user ends dragging or resizing the brush. But what I'm not sure about is if I should pass currentDomain or cachedDomain instead?

I'd be happy to write another PR to fix my mistake. And I'm so sorry that I introduced a bug. :( I'm just hoping that nobody has used it yet.