Scroll to the top or bottom per Janghou

Scrolls easy and fast to the top or bottom of a website. Swipe from the left to the middle and up for up to the top or down for down to the bottom.

Great on mobile or touchscreen.

Changelog
1.78
- fix for pages with CSS body height set to 100% e.g. nytimes.com
1.76
- update manifest to include `gecko_android` object
1.74
- added preventDefault to fix issue starting a gesture on images.
1.72
- fixed issue on scroll to bottom and lazy loading images
- wider gap to start swiping from the left for easier handling on Android 12+ gesture UI
1.68
- improved performance on JS-intensive sites
- improved performance on wide / horizontal scrolling sites
- gesture changed: swipe from left to middle and then up or down


Before 1.68
The old gesture was move from the middle to the right, but that didn't work well on horizontal scrolling sites.