chore(release): prepare 0.4.0

Author: medz

CHANGELOG.md

@@ -1,3 +1,26 @@
+## 0.4.0
+
+### Features
+
+- Add `DuplicatePolicy.append` so a normalized route slot can retain multiple
+  handlers in registration order.
+- `Router.matchAll(...)` now expands appended entries from the same slot while
+  keeping deterministic route priority ordering.
+
+### Fixes
+
+- `matchAll(...)` now snapshots captured params before backtracking so lazy
+  parameter materialization stays stable for every collected match.
+- Lookup normalization now rejects interior empty path segments such as
+  `"/users//42"` instead of letting fallback wildcards match them.
+
+### Performance
+
+- Reduced matcher hot-path overhead by removing recursive traversal and
+  streamlining slot collection/materialization.
+- Improved `matchAll(...)` throughput across static, dynamic, and appended-route
+  scenarios with dedicated benchmarks.
+
 ## 0.3.0
 
 ### Features

pubspec.yaml

@@ -2,7 +2,7 @@ name: roux
 description: >-
   A lightweight, fast, functional router for Dart with static, parameterized, and
   wildcard route matching.
-version: 0.3.0
+version: 0.4.0
 repository: https://github.com/medz/roux
 
 funding: