- Change page number indicator
- Remove most of the scrolling cruft as it has no chance of working
anyway, thanks to our benevolent browsers
- Scroll to page header if the page is not the first one (I'm surprised
this even works)
- Use promises rather than timers
- Simplify top page detection using .elementFromPoint rather than
iterating over all pages. Coincidentally, this seems to work slightly
better
29b0fde9a7