Update changelog

Author: countzero

CHANGELOG.md

@@ -4,6 +4,14 @@ 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).
 
+## [1.4.0] - 2024-02-29
+
+### Added
+- Fix check when an importance matrix is required
+
+### Changed
+- Update supported quantization types
+
 ## [1.3.0] - 2024-02-22
 
 ### Added