docs: update version to 0.3.0 and sync changelog with CHANGELOG.md

docs/changelog.rst

@@ -6,22 +6,37 @@ All notable changes to FastAPI Traffic are documented here.
 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>`_.
 
-[0.2.1] - 2026-03-07
+[0.3.0] - 2026-03-17
 --------------------
 
+Added
+^^^^^
+
+- Expanded example scripts with improved docstrings and usage patterns
+- New ``00_basic_usage.py`` example for getting started quickly
+
 Changed
 ^^^^^^^
 
-- Improved config loader validation using Pydantic schemas
-- Added pydantic>=2.0 as a core dependency
-- Fixed sync wrapper in decorator to properly handle rate limiting
-- Updated pyright settings for stricter type checking
-- Fixed repository URL in pyproject.toml
+- Refactored Redis backend connection handling for improved reliability
+- Updated algorithm implementations with cleaner type annotations
+- Improved config loader validation with stricter Pydantic schemas
+- Enhanced decorator and middleware error handling
+- Reorganized examples directory structure (removed legacy ``basic_usage.py``)
 
-Removed
-^^^^^^^
+Fixed
+^^^^^
 
-- Removed unused main.py
+- Redis backend connection pool management edge cases
+- Type annotation inconsistencies across core modules
+
+[0.2.1] - 2026-03-12
+--------------------
+
+Fixed
+^^^^^
+
+- Test assertion bug in ``test_load_rate_limit_config_from_env_missing_limit`` test case within ``test_config_loader.py``.
 
 [0.2.0] - 2026-02-04
 --------------------