release: bump 0.8.1 -> 0.8.2 (#245)

Patch release shipping the R WebAssembly build fix (#244): `bindings/r/configure` builds the C ABI from source for `wasm32-unknown-emscripten`, so r-universe's webR build stops failing. Also carries the shared Go badge in `bindings/go/README.md`. Version bumped across all manual touchpoints via `bump_version.py` (incl. DESCRIPTION + csproj, which had drifted before).

bindings/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "wickra",
-  "version": "0.8.1",
+  "version": "0.8.2",
   "description": "Streaming-first technical indicators: incremental, fast, install-free. Node bindings powered by Rust.",
   "author": "kingchenc <support@wickra.org>",
   "main": "index.js",
@@ -47,12 +47,12 @@
     "node": ">= 18"
   },
   "optionalDependencies": {
-    "wickra-linux-x64-gnu": "0.8.1",
-    "wickra-linux-arm64-gnu": "0.8.1",
-    "wickra-darwin-x64": "0.8.1",
-    "wickra-darwin-arm64": "0.8.1",
-    "wickra-win32-x64-msvc": "0.8.1",
-    "wickra-win32-arm64-msvc": "0.8.1"
+    "wickra-linux-x64-gnu": "0.8.2",
+    "wickra-linux-arm64-gnu": "0.8.2",
+    "wickra-darwin-x64": "0.8.2",
+    "wickra-darwin-arm64": "0.8.2",
+    "wickra-win32-x64-msvc": "0.8.2",
+    "wickra-win32-arm64-msvc": "0.8.2"
   },
   "scripts": {
     "build": "napi build --platform --release",