Lightning Changelog

Fixes
- intent handling vulnerability
- downloading crash (marshmallow)
- various bugs related to settings, settings not getting remembered, etc.
- bugs that happened when browser went to the background
- bugs with search bar size changing/not changing when supposed to
- updated ad block definition (Lightning+)
- started to improve app architecture (affects me not you)
- LOTS of other bugs (see git diff)

Features
- added: option to request "Do Not Track"
- added: option to hide X-Requested-With header
- added: option to hide X-Wap-Profile
- added: language support in google search suggestions
- added: home screen widget
- added: new tab button on tablet UI
- added: tab add/remove animation on both tablet and phone UI
- changed: close tabs dialog (long-press back button)
- changed: number icon instead of hamburger icon for better usability
- changed: back/forward arrows change color in tablet UI to indicate that you can go back/forward
- changed: search bar color now matches rest of UI
- changed: smoothed drawer/open close experience