feat(changelog): add changelog for version 0.3.1 with new features and fixes

Author: mceachen

CHANGELOG-mceachen.md

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+# Changelog (mceachen fork)
+
+All notable changes specific to this community fork's releases will be documented here.
+For upstream changes, see [CHANGELOG.md](CHANGELOG.md).
+
+## [0.3.1] - Unreleased
+
+### Added
+
+- **Lua binding with IEEE 754 compliant float serialization** ([`1d3c258`](https://github.com/mceachen/sqlite-vec/commit/1d3c258))
+  - New `bindings/lua/sqlite_vec.lua` module for Lua 5.1+
+  - `serialize_f32()` for IEEE 754 binary format
+  - `serialize_json()` for JSON format
+  - Example script in `examples/simple-lua/`
+  - Incorporates [upstream PR #237](https://github.com/asg017/sqlite-vec/pull/237) with extensive bugfixes for float encoding
+
+- **Safer automated release workflow** ([`6d06b7d`](https://github.com/mceachen/sqlite-vec/commit/6d06b7d))
+  - `prepare-release` job creates a release branch before building
+  - All builds use the release branch with correct version baked in
+  - Main branch only updated after successful npm publish
+  - If any step fails, main is untouched
+
+### Fixed
+
+- **Numpy header parsing**: fixed `&&`→`||` logic bug ([`90e0099`](https://github.com/mceachen/sqlite-vec/commit/90e0099))
+
+- **Go bindings patch updated for new SQLite source** ([`ceb488c`](https://github.com/mceachen/sqlite-vec/commit/ceb488c))
+  - Updated `bindings/go/ncruces/go-sqlite3.patch` for compatibility with latest SQLite
+
+- **npm-release workflow improvements**
+  - Synchronized VERSION file with package.json during version bump ([`c345dab`](https://github.com/mceachen/sqlite-vec/commit/c345dab))
+  - Enhanced npm publish to handle prerelease tags (alpha, beta, etc.) ([`0b691fb`](https://github.com/mceachen/sqlite-vec/commit/0b691fb))
+
+## [0.3.0] - 2026-01-04
+
+### Added
+
+- **OIDC npm release workflow with bundled platform binaries** ([`f7ae5c0`](https://github.com/mceachen/sqlite-vec/commit/f7ae5c0))
+
+  - Single npm package contains all platform builds (prebuildify approach)
+  - Simpler, more secure, works offline and with disabled scripts
+  - Platform binaries: linux-x64, linux-arm64, darwin-x64, darwin-arm64, win32-x64, win32-arm64
+
+- **Alpine/MUSL support** ([`f7ae5c0`](https://github.com/mceachen/sqlite-vec/commit/f7ae5c0))
+  - Added linux-x64-musl and linux-arm64-musl builds
+  - Uses node:20-alpine Docker images for compilation
+
+### Fixed
+
+- **MSVC-compatible `__builtin_popcountl` implementation** ([`fab929b`](https://github.com/mceachen/sqlite-vec/commit/fab929b))
+  - Added fallback for MSVC which lacks GCC/Clang builtins
+  - Enables Windows ARM64 and x64 builds
+
+### Changed
+
+- **Node.js package renamed to `@mceachen/sqlite-vec`** ([`fe9f038`](https://github.com/mceachen/sqlite-vec/commit/fe9f038))
+  - Published to npm under scoped package name
+  - Updated documentation to reflect new package name
+  - All other language bindings will continue to reference upstream ([vlasky/sqlite-vec](https://github.com/vlasky/sqlite-vec))
+
+### Infrastructure
+
+- Updated GitHub Actions to pinned versions via pinact ([`b904a1d`](https://github.com/mceachen/sqlite-vec/commit/b904a1d))
+- Added `bash`, `curl` and `unzip` to Alpine build dependencies ([`aa7f3e7`](https://github.com/mceachen/sqlite-vec/commit/aa7f3e7), [`9c446c8`](https://github.com/mceachen/sqlite-vec/commit/9c446c8))
+- Documentation fixes ([`4d446f7`](https://github.com/mceachen/sqlite-vec/commit/4d446f7), [`3a5b6d7`](https://github.com/mceachen/sqlite-vec/commit/3a5b6d7))