Add handleDelayedScrollbar option

Sometimes a vertical scrollbar appears on the page after the plugin has already calculated its width, causing the right scroll arrow to wrap to the next line. Similarly, if the content of the default tab does not cause a scrollbar but another tab's content does, clicking that other tab can cause the scrollbar to appear, forcing the right scroll arrow to wrap.

If you're experiencing this situation, you can now pass the handleDelayedScrollbar option so the delayed appearance of a scrollbar will trigger the plugin to refresh its width.