4.17.0-alpha.3

Alpha release for testing. Changes since 4.17.0-alpha.2:

🐛 Fixes

• macOS updates now install through electron-updater (#3431, closes #955)
• "Check for updates" now works on store builds — Mac App Store, Microsoft Store, Snap, Flathub (#3460)
• Pressing ESC no longer exits macOS native fullscreen (#3433)

✨ Improvements

• Log viewer: correctness, performance, and UX improvements (#3446)