• Added a global switch to turn Internet connectivity for Variety off or on
• Wallhaven sources now use the Wallhaven API, not html parsing (Thanks to @nlpsuge).
• Support for fetching NSFW images from Wallhaven (Thanks to @nlpsuge).
  When adding Wallhaven sources, you can provide your own Wallhaven API key.
  If provided, and the source URL is set to search for NSFW images, Variety will obey.
• Auto-upgrade set_wallpaper/get_wallpaper scripts.
  Starting from this release, Variety will always automatically upgrade
  the set_wallpaper/get_wallpaper scripts to make sure fixes to those are picked up.
  Your old files have been preserved in the ~/.config/variety/scripts folder.
  If you need to use custom scripts, please set their paths in the
  set_wallpaper_script/get_wallpaper_script properties in ~/.config/variety/variety.conf.