Mozilla Firefox 68.0 Beta 13 64-bit for PC Windows

# Fixed:
- Selenium WebDriver may cause Firefox to crash at startup

# New
- Support for Google’s Widevine CDM on Windows and Mac OS X so streaming services like Amazon Video can switch from Silverlight to encrypted HTML5 video.
- Enable VP9 video codec for users with fast machines
- Embedded YouTube videos now play with HTML5 video if Flash is not installed.
- View and search open tabs from your smartphone or another computer in a sidebar
- Allow no-cache on back/forward navigations for https resources
- Latgalu [ltg] locale added. Wikipedia tells us there are 164,500 daily speakers.
# Fixed
- Various security fixes
# Changed
- FUEL (Firefox User Extension Library) has been removed. Add-ons relying on it will stop working.
- The browser.sessionstore.restore_on_demand preference has been reset to its default value (true) to avoid e10s performance problems. Because faster is better!
- The Firefox click-to-activate plugin whitelist has been removed.
# Developer
- Web platform changes
- View, start,and debug registered Service Workers in the Service Workers developer tool
- Simulate Push messages in the Service Workers developer tool
- 'Start' button for service workers in about:debugging to start registered Service Workers
- Changes that can affect add-on compatibility
- Added support for ChaCha20/Poly1305 cipher suites
- Custom user agents supported in Responsive Design Mode
- Smart multi-line input in the Web Console
* Developer Information
# HTML5
- cuechange events are now available on TextTrack objects
- WebCrypto: PBKDF2 supports SHA-2 hash algorithms
- WebCrypto: RSA-PSS signature support

# Fixed
- Page loading issue related to antivirus software
- Search plugin issue for various locales
- Add-on signing certificate expiration
- Service worker update issue
- Build issue when jit is disabled
- Limit Sync registration updates

# New
- Improved security of the JavaScript Just In Time (JIT) Compiler
- GTK3 integration (GNU/Linux only)
# Fixed
- Correct rendering for scaled SVGs that use a clip and a mask
- Various security fixes
- Screen reader behavior with blank spaces in Google Docs corrected
# Changed
- WebRTC fixes to improve performance and stability
# Developer
- Display dominator trees in Memory tool
- Allocation and garbage collection pause profiling in the performance panel
- Launch responsive mode from the Style Editor @media sidebar