Provide some mouse gesture on tabs and other stuff
- Navigate to last page by clicking LMB while holding RMB (default: on)
- Switch tabs by scroll wheel when hover on tab bar
- Switch tabs by scroll wheel when holding right mouse button
- Switch to a tab when pointer is hovered on it
- Options can be changed inside Addons Manager
https://addons.mozilla.org/en-US/firefox/addon/tab-kit-mouse-gestures/
See https://github.com/tabkit/mouse-gestures/blob/master/CHANGELOG.md for what's changed