update changelog

Author: d8vjork

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.0] - 2025-03-12
+
+### Added
+
+- `order` config property to have better control on the order of algorithm preference (e.g. `RESPONSE_COMPRESSION_ORDER=ztsd,br,gzip`)
+
 ## [3.0.0] - 2025-03-05
 
 ### Added