-adding the ability to enable and disable paging via property pagingEnabled (enabled by default)
-adding ability for views to be different widths than the full scrollview's frame width via the new datasource method widthForPageOnSlidingPagesViewController. If you don't implement this method, it's the same as before that the views will be the width of the main frame. Don't use this new variable widths if you have paging enabled!
-changing the way the synchronisation between the bottom scroller and top scroller works because now things can have different widths, the top scroller might have to move at different speeds depending on how wide the current view is