docs: update CHANGELOG for v0.1.0 release

Author: Manabu-GT

CHANGELOG.md

@@ -1 +1,23 @@
-# Changelog
+# Change Log
+
+## Version 0.1.0 *(2026-02-11)*
+
+Initial release.
+
+### Effects
+
+* **Rain** – Multi-layer parallax raindrops with halo glow. Presets: `light()`, `moderate()`, `heavy()`, `storm()`
+* **Snow** – Crystalline dendritic snowflakes with gentle drift. Presets: `light()`, `moderate()`, `heavy()`, `blizzard()`
+* **Clouds** – Volumetric cloud cover using layered Perlin noise. Presets: `wispy()`, `partlyCloudy()`, `overcast()`
+* **Lightning Flash** – Forking bolt geometry with atmospheric glow and `suspend fun flash()` trigger
+
+### Core
+
+* `Modifier.aetherOverlay()` – Transparent overlay modifier powered by AGSL shaders (API 33+)
+* `AetherEffect` interface – Implement custom effects with `shaderSource` and `uniforms()`
+* `QualityPreset` – `LOW`, `MEDIUM`, `HIGH` rendering quality levels
+* `Wind` – Unified wind model with `Calm`, `LightBreeze`, `StrongWind` presets
+* Shader caching by source string – no recompilation on parameter changes
+* `Modifier.Node` implementation (not `composed {}`)
+* Reactive Battery Saver and reduced motion detection
+* No-op fallback on devices below API 33