release(0.2.0): bump version from 0.1.5 to 0.2.0

This release carries the full post-audit work — 46 new indicators
(25 → 71), an eight-family taxonomy restructure, new bindings for
RollingVWAP, the WASM streaming-update parity, the pyo3/numpy CVE
fix, the SMA/Bollinger drift bound, the O(1) LinearRegression
refactor, the UlcerIndex deque and the PSAR is_ready/reset fixes
plus a refreshed example suite and wiki. The earlier 0.1.5 number
was never published; jumping straight to 0.2.0 is the cleaner signal
for the scope of the change.

Bumped:
- Cargo.toml workspace + wickra-core workspace-dep version
- bindings/python/pyproject.toml
- bindings/node/package.json + optionalDependencies (six platform pins)
- 6 x bindings/node/npm/<target>/package.json
- Cargo.lock regenerated
- CHANGELOG.md [0.2.0] header + compare-link
- docs/wiki/Home.md published-versions table
- docs/wiki/Quickstart-{Rust,Node,WASM}.md + Warmup-Periods.md
  version-pinned narrative lines

Verified locally:
- cargo fmt/clippy/test (628 passed, 0 failed)
- cargo deny check (no suppression)
- bindings/node node --test (92/92)
- bindings/python pytest (118/118)
- import wickra reports 0.2.0 with 72 indicator classes

docs/wiki/Home.md

@@ -26,12 +26,12 @@ open an issue on GitHub to discuss a separate license.
 
 | Registry  | Package        | Version |
 |-----------|----------------|---------|
-| crates.io | `wickra`       | 0.1.5   |
-| crates.io | `wickra-core`  | 0.1.5   |
-| crates.io | `wickra-data`  | 0.1.5   |
-| PyPI      | `wickra`       | 0.1.5   |
-| npm       | `wickra`       | 0.1.5   |
-| npm       | `wickra-wasm`  | 0.1.5   |
+| crates.io | `wickra`       | 0.2.0   |
+| crates.io | `wickra-core`  | 0.2.0   |
+| crates.io | `wickra-data`  | 0.2.0   |
+| PyPI      | `wickra`       | 0.2.0   |
+| npm       | `wickra`       | 0.2.0   |
+| npm       | `wickra-wasm`  | 0.2.0   |
 
 Release notes and tagged builds:
 <https://github.com/kingchenc/wickra/releases>.
@@ -47,7 +47,7 @@ Release notes and tagged builds:
 - [Quickstart: Node](Quickstart-Node.md) — `npm install wickra`, basic
   `SMA` and `MACD` calls, and the install surface. Windows x64 was
   previously blocked by an npm spam filter on `wickra-win32-x64-msvc`;
-  that was resolved with npm Support, and 0.1.5 is the first release in
+  that was resolved with npm Support, and 0.2.0 is the first release in
   which `npm install wickra` works end-to-end on Windows.
 - [Quickstart: WASM](Quickstart-WASM.md) — `npm install wickra-wasm`,
   building with `wasm-pack`, and running indicators client-side in a

docs/wiki/Quickstart-Node.md

@@ -10,12 +10,12 @@ slow JS reimplementation.
 npm install wickra
 ```
 
-> **Windows install (0.1.5+).** Earlier patch releases were blocked on
+> **Windows install (0.2.0+).** Earlier patch releases were blocked on
 > Windows x64 because the platform-specific sub-package
 > `wickra-win32-x64-msvc` was held back by npm's automated spam filter, so
 > `require('wickra')` threw `Error: Cannot find module
 > 'wickra-win32-x64-msvc'` after a successful `npm install`. npm Support
-> released the name on 2026-05-22; 0.1.5 is the first version in which
+> released the name on 2026-05-22; 0.2.0 is the first version in which
 > Windows x64 installs cleanly end-to-end (version numbers `0.1.1`–`0.1.4`
 > of that sub-package remain burned and cannot be republished — see the
 > npm registry page for `wickra-win32-x64-msvc`). Linux x64, Linux arm64
@@ -135,7 +135,7 @@ The complete TypeScript definitions live at
 | `batch(...)`              | Single-output: flat `Array<number>` with `NaN` warmup.<br>Multi-output: flat interleaved `Array<number>`. |
 | `reset()`                 | Returns to a freshly-constructed state.                                |
 | `isReady()`               | `true` once the first value has been emitted.                          |
-| `warmupPeriod()`          | Present on every indicator class (single- and multi-output, scalar- and candle-input) since `0.1.5`. |
+| `warmupPeriod()`          | Present on every indicator class (single- and multi-output, scalar- and candle-input) since `0.2.0`. |
 
 A complete reference run lives in `bindings/node/__tests__/smoke.test.js`:
 

docs/wiki/Quickstart-Rust.md

@@ -15,7 +15,7 @@ build. The `wickra` crate is a thin façade that re-exports everything from
 `wickra-core`; you can also depend on `wickra-core` directly if you want to
 skip the façade.
 
-The published crate is at version `0.1.5` on
+The published crate is at version `0.2.0` on
 [crates.io](https://crates.io/crates/wickra).
 
 ## The `Indicator` trait in 30 seconds

docs/wiki/Quickstart-WASM.md

@@ -111,7 +111,7 @@ console.log(last);
 their fields per row (e.g. MACD: `[macd0, signal0, hist0, macd1, ...]`). The
 exact layout is documented in the generated `pkg/wickra_wasm.d.ts`.
 
-> Since `wickra-wasm@0.1.5`, every candle-input indicator (ATR, ADX,
+> Since `wickra-wasm@0.2.0`, every candle-input indicator (ATR, ADX,
 > WilliamsR, CCI, MFI, PSAR, Keltner, Donchian, VWAP, RollingVWAP,
 > AwesomeOscillator, Aroon, Stochastic, OBV, and the rest of the
 > volume / volatility / trailing-stop / price-statistics families) exposes

docs/wiki/Warmup-Periods.md

@@ -160,7 +160,7 @@ const sma = new wickra.SMA(20);
 console.log(sma.warmupPeriod());   // -> 20
 ```
 
-(Since `wickra@0.1.5`, `warmupPeriod()` is exposed on every Node and
+(Since `wickra@0.2.0`, `warmupPeriod()` is exposed on every Node and
 WASM class — single- and multi-output — alongside `update()`, `reset()`
 and `isReady()`. Consult `bindings/node/index.d.ts` for the
 authoritative TypeScript surface.)