v2.0.0-alpha.2

Added

• Chord pad panel with preset/scale support, polyphonic audition and
  undoable editing (#5169)
• Chord editor for placing and editing chord objects in progressions
  (#5169)
• Chord suggestion engine that recommends next chords based on the
  current chord and scale
• Chord symbols displayed inside chord clips on the timeline
• Chord track recording, including from chord pad notes (#5281)
• Musical mode: time-stretch audio clips to follow the project tempo
  (offline Rubberband), toggleable globally and per clip (#4368)
• Source BPM detection from audio file metadata, with automatic tempo
  estimation when metadata is missing (#4746)
• Pencil tool for creating objects; hold Ctrl and drag to paint
  consecutive objects (#5178)
• Eraser tool for deleting objects by clicking or dragging a rectangle
  (also via right-drag) (#5180)
• Cut tool for splitting objects at the clicked position (Alt+click)
  (#5179)
• Ramp tool for drawing linear velocity ramps across MIDI notes (#5181)
• Audition tool for playing from the clicked position while held
  (#5182)
• Editable base tempo and base time signature anchored at the start of
  the timeline
• BPM cell in the transport bar showing the tempo at the playhead,
  editable via an undoable dialog
• Tempo automation curve drawn behind tempo objects
• Draggable clip-start, loop-start and loop-end markers on the clip
  editor ruler
• Undo/Redo actions in the Edit menu showing the next action name
• Panel toggle buttons in the toolbar and View menu
• Generic parameter editor window for plugins without a native UI
• Open .zpj project files from file managers or the command line
  (#5275)
• MIDI note activity highlighting on piano roll keys
• Undoable velocity editing with per-note clamping and live value labels
• Alternating bar shading in the arranger background
• Language menu with per-language completion percentages and a "More
  Languages" submenu
• Optional Tracy profiler integration

Changed

• Rename "regions" to "clips" throughout the UI and project format
  (#4368)
• Reimplement bundled Faust plugins as internal plugins instead of
  generated VST3/CLAP bundles
• Switch most dependency management from CPM to Conan
• Rebuild the live waveform, spectrum analyzer and meter displays on a
  new real-time-safe port observation system
• Rework automation rendering with a C++ canvas painter and
  segment-based curve evaluation on the audio thread
• Arranger drags and resizes now preview in place and commit as a
  single undo step on release
• Default to dark mode on startup
• Update translations (Spanish, Ukrainian, Chinese Simplified, German,
  Russian, French, Japanese and more)

Fixed

• Faders, knobs and balance controls getting stuck when a parent
  scroll view takes over the drag (#5308)
• Crash from wrapped 32-bit MIDI timestamps after ~50 days of system
  uptime (Linux ALSA)
• Track name field keeping stale text and staying in edit mode when
  switching tracks (#5220)
• Deleting or cloning tempo and time signature objects failing
• Incorrect note-offs with overlapping same-pitch MIDI notes (#5279)
• Distorted automation curves when tempo changes occur within a clip
• Track selection pointing at the wrong track when tracks are hidden
• Selections of non-moved tracks being lost when moving tracks
• Stale entries for deleted plugin files shown in the plugin browser
• Failed plugin instantiation leaving broken tracks; an error dialog is
  now shown instead
• Load/save dialogs not defaulting to the configured new-project
  directory (#5211)
• Dock panels resizing smaller than their content, and the bottom dock
  being cut off on first load
• Peak meter and fader value labels shifting the layout as values
  change

Removed

• Legacy GTK-era code (widgets, actions, event manager, gschema
  generator)
• Legacy real-time audio stretcher (superseded by the offline
  time-stretch engine)