Adds useful things to Wattpad
I know some other scripts exist for Wattpad that do similar things, but here's my take.
For anyone installing, be forewarned that this is about 5 minutes of coding as of right now and the way it's set up, nothing works unless the wattpad story is prefetched which might take a reload of the page to get.
Left and Right arrow keys go back and forth between parts.
Show Wattpad official word count for each part as given by the prefetch.
