Important patches and webview2 (MS Edge) preview.

Lively v1.0 onwards REQUIRE Windows 10 version 1903 or above.

• Updated CEF Web Browser.
  Security fix for CVE-2020-15999 Heap overflow.
• Resizable Wallpaper preview window.
• Fixed mouse cursor position issues in multiple screen setups.
• Fixed wallpaper preview not working for stream type wallpapers.
• Browser fallback for stream type wallpaper.
• (Preview) Microsoft Edge (WebView2) support; still in early development - some wallpapers and features will not work.
  Currently requires Microsoft Edge Canary channel to be installed separately on the system:
  https://www.microsoftedgeinsider.com/en-us/download
• Updated included .net core runtime to 3.9 (if 3.7 or higher version is already installed, will be skipped.)
• libMPV player custom configuration file support:
  https://github.com/rocksdanister/lively/wiki/Video-Guide
• Taskbar-icon progress indicator during wallpaper creation and app update.
• App updater window can be minimized now.
• UI tweaks/adjustments, updated untranslated regions.
• Updated libmpv video player.
• Updated Inno installer.
• Turkish, Serbian, Bahasa Indonesia languages added.
• Updated localization texts for Polish, Korean, French, Russian and Malay.