QScroolBar enchancemet

There is huge necessity to ehance QScrollBar class. There is one special case to cover: When user scrolls to the end - mean: sliderPosition() == maximum(). Very often user think "it should be scrolled to the end ever" even when new items/data/text/whatever is added to the scrolled area. There should be boolean property called "stickToEnd", with default value = false. This is use full in terminal or chat programs or any other "log-like" programs. I think it should be implemented in QScrollBar because it will be use full on every descendants of QScrollArea.