v1.21.0

Yo, Hackers, just swinging by with a speedy update:

• 🚀 Added Kagi search engine (thanks to @MohamedElashri)
• ⛏ Fixed the comments url in AI Card
• 🔧 Fixed the Ad display
• 🎨 Restored the missing favicon

Got a cool feature idea? don't hesitate, open an issue on GitHub and share your thoughts.