Feat: start preparing for release

CHANGELOG.md

@@ -2,6 +2,56 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.1.4]
+
+### Breaking
+- **Doux v0.0.12**: removed Mutable Instruments Plaits modes (`modal`, `va`, `analog`, `waveshape`, `grain`, `chord`, `swarm`, `pnoise`, etc.). Native percussion models retained; new models added: `tom`, `cowbell`, `cymbal`.
+- Simplified effects/filter API: removed per-filter envelope parameters in favor of the universal `env` word.
+- Recording commands simplified: removed `/sound/` path segment from `rec`, `overdub`, `orec`, `odub`.
+
+### Forth Language
+- New modulation transition words: `islide` (swell), `oslide` (pluck), `pslide` (stair/stepped).
+- New `lpg` word (Low Pass Gate): pairs amplitude envelope with lowpass filter modulation.
+- New `inchan` word: select audio input channel by index.
+- New EQ frequency words: `eqlofreq`, `eqmidfreq`, `eqhifreq`.
+
+### UI / UX
+- Redesigned top bar: consolidated transport, tempo, bar:beat display with visual beat segments.
+- CPU meter with color-coded fill bar (green/yellow/red).
+
+### Engine
+- Audio input channel selection support.
+- Audio buffer sizing improved for multi-channel input.
+
+### Packaging
+- CI migrated from GitHub Actions to Gitea Actions.
+- Removed WIX installer; Windows now distributed via zip and NSIS only.
+- Gitea Actions workflow for automatic website deployment.
+- Added LICENSE file.
+
+### Documentation
+- Extensive documentation updates reflecting doux v0.0.12 API changes across sources, filters, modulation, wavetable, and audio modulation docs.
+
+## [0.1.3]
+
+### Forth Language
+- New `stretch` word: pitch-independent time stretching via phase vocoder (e.g., `kick sound 2 stretch .` plays at half speed, same pitch).
+- Automatic default release time on sounds when none is explicitly set.
+
+### Engine
+- Sample-accurate timing: delta computation switched from float seconds to integer sample ticks, fixing precision issues.
+- Lock-free audio input buffer: replaced `Arc<Mutex<VecDeque>>` with `HeapRb` ring buffer.
+- Theme access optimized: `Rc<ThemeColors>` replaces deep cloning on every `get()`.
+- Dictionary keys cached in `App` to avoid repeated lock acquisitions during rendering.
+
+### Fixed
+- Realtime priority diagnostics: dedicated `warn_no_rt()` on Linux, lookahead widened from 20ms to 40ms when RT priority unavailable.
+- Float epsilon precision in delta/nudge zero-comparisons.
+- Windows build fixes for standalone and plugin targets.
+
+### Documentation
+- Time stretching usage guide added to `docs/engine/samples.md`.
+
 ## [0.1.2]
 
 ### Forth Language