release: bump 0.5.0 -> 0.5.1 (#162)

Version bump **0.5.0 → 0.5.1** for the Seasonality & Session family release (12 indicators, PR #161).

Bumped: `Cargo.toml` (workspace version + `wickra-core` dep), `Cargo.lock` (via `cargo build`), `bindings/python/pyproject.toml`, `bindings/node/package.json` (+ 6 `optionalDependencies`), the 6 `bindings/node/npm/<platform>/package.json`, both `package-lock.json` files, and `CHANGELOG.md` (`[Unreleased]` → `[0.5.1]` + compare URLs).

No code changes — version strings only.

CHANGELOG.md

@@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [0.5.1] - 2026-06-03
+
+### Added — Seasonality & Session family (12 indicators)
+
 - **Volume-by-Time Profile** — mean traded volume bucketed by intraday time (`VOLUME_BY_TIME_PROFILE`).
 - **Intraday Volatility Profile** — return standard deviation bucketed by intraday time (`INTRADAY_VOLATILITY_PROFILE`).
 - **Day-of-Week Profile** — mean bar return bucketed by weekday (`DAY_OF_WEEK_PROFILE`).
@@ -1180,7 +1185,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   optional Binance live feed.
 - Bindings for Python, Node.js, and WebAssembly.
 
-[Unreleased]: https://github.com/wickra-lib/wickra/compare/v0.5.0...HEAD
+[Unreleased]: https://github.com/wickra-lib/wickra/compare/v0.5.1...HEAD
+[0.5.1]: https://github.com/wickra-lib/wickra/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/wickra-lib/wickra/compare/v0.4.7...v0.5.0
 [0.4.7]: https://github.com/wickra-lib/wickra/compare/v0.4.6...v0.4.7
 [0.4.6]: https://github.com/wickra-lib/wickra/compare/v0.4.5...v0.4.6