Norton Virus Definitions (64-bit)

What's new in this version:

- Added subtitle download from video-services
- Added support for Google Backup and Sync
- Added user-agent option for command line parameters
- Added the ability to manually enter the User-Agent in the settings
- Improved handling of the VideoFreq parameter in a portable version
- Improved downloads of playlists containing videos with the same names
- Minor bugs fixed