chore: bump version to 0.5.0

Author: User

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to ACE Framework will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.5.0] - 2025-11-20
 
 ### ⚠️ Breaking Changes
 - **Playbook format changed to TOON (Token-Oriented Object Notation)**
@@ -163,6 +163,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Type hints and modern Python practices
 - MIT licensed for open source use
 
+[0.5.0]: https://github.com/Kayba-ai/agentic-context-engine/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/Kayba-ai/agentic-context-engine/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/Kayba-ai/agentic-context-engine/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/Kayba-ai/agentic-context-engine/compare/v0.1.1...v0.2.0

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ace-framework"
-version = "0.4.0"
+version = "0.5.0"
 description = "Build self-improving AI agents that learn from experience"
 readme = "README.md"
 requires-python = ">=3.11"