Mixxx 2.5.0

What's new in this version:

- Modernized Platform: Update to Qt6
- Mixxx is now using Qt6, offering improved performance and enhanced compatibility with modern systems.
- Build system defaults to Qt6. Qt5 build support will be dropped with Mixxx 2.6
- Drop support for macOS versions earlier than 11
- Drop support for Windows versions earlier than Windows 10 build 1809
- Drop support for Ubuntu versions earlier than 22.04
- Require a C++20 compiler
- Support GCC 14
- DlgAbout: Add Qt version to the dialog

Engine:
- Beats: allow undoing the last BPM/beats change
- Add beatloop anchor to set and adjust loop from either start or end
- Add Rate Tap button
- Store/restore regular loop when toggling rolling loops
- Looping/Beatjump: use seconds if track has no beats

Skins / Interface:
- Toggle the menubar with single Alt key press (auto hide)
- Allow to edit track title and artist directly within the decks via a delayed double-click
- Add type toggle to cue popup
- Effect Meta Knob: draws arc from default meta position
- Command line interface: Add option --start-autodj to start Auto DJ immediately after Mixxx start.

Effects:
- Add Compressor effect
- add Glitch effect
- Add backend for Audio Unit (AU) plugins on macOS

Library:
- Shortkeys Cut, Copy, Paste for track list management
- Playlists: move tracks with Alt + Up/Down/PageUp/PageDown/Home/End
- Search: Add special BPM filters
- Search: Add "OR" search operator
- Search: Add 'type' filter
- Search: Add 'id' filter
- Search related Tracks menu: Allow to use multiple filters at once
- Add multi-track property editor / batch tag editor
- Computer feature: add sidebar action "Refresh directory tree"
- Add 'Shuffle playlist' sidebar action
- Tracks: Custom color for missing tracks
- Tracks: Custom text color for played tracks (qss)

Preferences:
- Decks: Add load point option 'First hotcue'
- MIDI Input editor: allow selecting multiple Options

Controller Mappings:
- Denon MC7000: Add optional jog wheel acceleration to the controller mapping
- Denon MC7000: Unify parameter button logic and add customizable modes
- Denon MC7000: Add sampler options to mapping settings
- MIDI for light: Implement new Active deck heuristic
- MIDI for light: Add settings GUI
- Numark Scratch: Add controller settings
- Pioneer DDJ-FLX4: Mapping improvements
- Traktor Kontrol S4 MK3: Add setting definition for
- Traktor Kontrol S4 MK3: Software mixer support and default pad layout customisation
- Traktor Kontrol S4 Mk3: Rework jogwheel speed compute and motorized platter
- Traktor Kontrol S4 Mk3: Revert QuickEffect preset offset
- Traktor Kontrol S4 Mk3: Correct wheel timestamp wrap-around

Waveforms:
- Visualize slip mode position by splitting waveform (RGB GLSL only)
- Show beats and time until next marker in the waveform
- Allow changing the waveform overview type without reloading the skin
- Overview: Update immediately, when the normalize option or global gain changed