I am using your plugin on a project and I've encountered a bug where the scroll stops at ~100px higher than the body's bottom.
Apparently, changing line 134 with:
minScrollTop = container.get(0).clientHeight - container.get(0).outerHeight;
(changing scrollHeight to outerHeight)
fixes the issue. I'm not sure if it's a real bug or poor implementation of other things but this seems to fix it for me