docs: update changelog

CHANGELOG.md

@@ -5,10 +5,17 @@ All notable changes to this project 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).
 
-## [3.0.2](https://github.com/loophp/iterators/compare/3.0.1...3.0.2)
+## [3.1.0](https://github.com/loophp/iterators/compare/3.0.2...3.1.0)
+
+### Merged
+
+- feat: implements stable sort [`#52`](https://github.com/loophp/iterators/pull/52)
+
+## [3.0.2](https://github.com/loophp/iterators/compare/3.0.1...3.0.2) - 2023-11-25
 
 ### Commits
 
+- docs: update changelog [`ade1a1a`](https://github.com/loophp/iterators/commit/ade1a1ab70d728286899effee9ffcef28a417242)
 - fix: typo, replace `fgets` with `fgetc` [`6414540`](https://github.com/loophp/iterators/commit/6414540cd2f6900b246b567c81b42ebd9269e4d6)
 
 ## [3.0.1](https://github.com/loophp/iterators/compare/3.0.0...3.0.1) - 2023-11-25