incorrect determination of the maximum window status

[Yaisis]

In the following example: window_001_13_alt_window_stats.d This code does not work correctly:

	if(isMaximized())
	{
		_isMaximized = true;
	}
	else
	{
		_isMaximized = false;
	}

Because the window status changes outside of the "onConfigureEvent" handler. And this handler is not always called when the window status changes.