Happy New Year 2024!

This version introduces the new name: ArrowDL
and the new website: www.arrow-dl.com

New:

• [General] Rename project
• [UI] Add new icons (bootstrap icons)
• [UI] Remove all themes but Fusion (Windows)
• [Build] Strip executable

Fixed:

• [UI] Fix bug with theme that doesn't apply at launch time
• [Torrent] Fix bug when import ill-formed torrent
• [Updater] Fix slot connection
• [Core] Fix c++ warnings
• [UI] Fix icons choice
• [UI] Remove old icons, old sounds
• [UI] Remove unimplemented actions
• [Torrent] Move static helpers to TorrentUtils
• [General] Replace QTimer with QTimer*
• [General] Use recommendation for C++20 members initialization using '=' operator
• [General] Use recommendation for c++20: auto operator<=>(const Class&) const = default;
• [Torrent] Refactor TorrentMessage

Updated:

• [i18n] Update translations
• [Stream] Update yt-dlp
• [Doc] Update documentation
• [Blog] Add 'Happy New Year 2024!' post

Full Changelog: v3.1.0...v4.0.0