chore: release version 3.1.0

- Add after_parse callback hook for validation and post-processing
- Update CHANGELOG with release date
- Bump version from 3.0.0 to 3.1.0

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: hakanensari

CHANGELOG.md

@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [3.1.0] - 2025-01-29
+
 ### Added
 
 - `after_parse` callback hook for validation and post-processing logic
@@ -70,4 +72,5 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 [2.2.0]: https://github.com/hakanensari/structure/compare/v2.1.0...v2.2.0
 [2.3.0]: https://github.com/hakanensari/structure/compare/v2.2.0...v2.3.0
 [3.0.0]: https://github.com/hakanensari/structure/compare/v2.3.0...v3.0.0
-[Unreleased]: https://github.com/hakanensari/structure/compare/v3.0.0...HEAD
+[3.1.0]: https://github.com/hakanensari/structure/compare/v3.0.0...v3.1.0
+[Unreleased]: https://github.com/hakanensari/structure/compare/v3.1.0...HEAD

lib/structure/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Structure
-  VERSION = "3.0.0"
+  VERSION = "3.1.0"
 end