Ereaderify：Helps browsing on a ereader, especially on the Onyx Boox Max: click on right (resp. left) 5% of the page triggers a page down (resp. up), displays black text on white background, and makes text bold...
Using `scrollByPages`, which improves the page scrolling accuracy. Improved css selector, making them explicit. Better font sizing.
Makes text bold for easy reading on an ereader, and gives access to page-up and page-down scrolling by a click on the left or right side of the page.