Important

• Nim 2.0.0 is now required.
• All init procs have been renamed, init(T, ...) -> initT(...)
• Immutable[ref T] has been replaced by iref[T]
• Immutable[ptr T] has been replaced by iptr[T]
• Renamed toImmutable -> immutable

The API in the data module has been completely overhauled:

• removed types EffectIndex, EffectColumns
• added consts rangeSpeed, noLoopPoint, noteNone, instrumentNone and effectNone
• Speed
  • is now a distinct uint8
  • Renamed speedToFloat -> toFloat
  • Renamed speedToTempo -> tempo
  • Added toSpeed, isValid, $ procs
• added type LoopPoint
• Sequence
  • renamed field loopIndex -> loop
  • loop field is now of type LoopPoint
  • add isValid proc
  • removed data, data= procs
• Instrument
  • removed new overload
  • add hash overload
• Waveform
  • removed new overload
  • add hash overload
• Renamed SequenceSize -> SequenceLen
• Renamed OrderSize -> OrderLen
• Table
  • added proc uniqueIds
• Order
  • Order is now a seq[OrderRow]
  • add proc initOrderRow, template orow
  • removed procs [], []=, len, setLen, setData, add, insert, remove and swap
• Effect
  • renamed EffectType -> EffectCmd, each enum starts with ec instead of et
  • renamed field effectType -> cmd
  • renamed proc effectTypeShortensPattern -> shortensPattern
  • renamed proc toEffectType -> toEffectCmd
  • renamed proc effectTypeToChar -> effectCmdToChar
• TrackRow
  • add types NoteColumn and InstrumentColumn
  • field note is now of type NoteColumn
  • field instrument is now of type InstrumentColumn
  • added procs has, value, asOption, $ for Column types
  • removed procs clearNote, clearInstrument, hasNote, hasInstrument, setNote, setInstrument, queryNote, queryInstrument,
• Track
  • Track data is now stored using a ref seq[TrackRow]
  • added proc data for accessing the track's data seq
  • removed procs setNote, setInstrument, setEffect, setEffectType, setEffectParam
  • add converter to a TrackView, toView
• added types Pattern, PatternView, SomePattern, SomeTrack
• Song
  • add procs $, isValid, removeUnusedTracks, allocateTracks, getRow, effectiveTickrate, patternLen
  • trackLen is now a property instead of a field
  • editPattern and viewPattern templates inject a Pattern variable instead of a template. Use value[channel] instead of value(channel)
• add types SongPos, SongSpan
• SongList
  • add procs isValid, data
  • removed overload for get that returns a ref Song
  • added proc mget that returns a ref Song
  • removed procs add, duplicate, remove, moveUp, moveDown
• Module
  • add proc isValid

Changes to the API in engine:

• engine internals now utilize the new tracking module
• modules apucontrol, enginecontrol and frequency have an unstable API, so any changes made to them will not be documented.
• added proc isPlaying
• getLocked renamed to locked
• added proc unlocked
• invalid starting position given to play no longer results in an IndexDefect being raised, instead the engine is halted.
• step renamed to tick
• currentFrame renamed to frame
• currentSong renamed to song
• currentNote renamed to note
• currentState renamed to trackState
• getTrackTimbre renamed to trackTimbre
• getTrackEnvelope renamed to trackEnvelope
• getTrackPanning renamed to trackPanning
• stepAndApply renamed to tickAndApply
• EngineFrame object changed
  • halted, startedNewRow, startedNewPattern fields replaced by status: TrackerStatus
  • speed is now of type Speed
  • order and row fields are replaced by pos: SongPos
• GlobalState object removed, as the engine internals no longer requires it
• ufAll renamed to updateAll

Added

• (common) iref[T] and iptr[T] (these replace Immutable[T])
• (common) FixedSeq[N, T] type for a seq-like container of fixed capacity.
• (common) Tristate enum
• (ir) == operator overload for RowIr
• (ir) runtime proc for an Operation
• (ir) toTrackRow proc for converting an Operation back into a TrackRow
• (ir) overload for toIr proc for partial ir conversion
• (note) NoteRange, Octave, Letter, NoteIndex and NotePair types
• (note) procs for converting a NoteIndex to a NotePair and vice versa
• New module, text, for text conversion and parsing of libtrackerboy data.
• New module, tracking, for tracking playback of a song.

Changed

• (data) The data module has been overhauled, see above
• (ir) fromIr(TrackIr) returns a tuple containing a track and a bool
• (ir) setFromIr proc now returns bool
• (ir) renamed proc toEffectType -> toEffectCmd
• modules apucontrol, enginecontrol and enginestate are no longer private and are now located in libtrackerboy/engine
• (engine) see above for detailed changes.
• (editing) completely rewritten, safer and easier to use.

Removed

• (common) MixMode type and related procs.
• (common) Immutable[T] type and related procs.
• (data) $ procs for Sequence and WaveData types. Use text module instead.
• (data) parseSequence proc, use text module instead.
• (data) parseWave proc, use text module instead.
• (ir) SongPath and PatternVisit types.
• (editing) PatternIter, ColumnIter types
• (notes) note compile-time proc