Update Changelog

Author: countzero

CHANGELOG.md

@@ -4,6 +4,20 @@ 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).
 
+## [1.5.0] - 2024-06-20
+
+### Added
+- Use existing importance matrix files for all quant formats
+
+### Changed
+- Move importance matrix files into dedicated directory
+- Simplify conversion from hf to gguf
+- Changed binary names to the new llama.cpp format (llama-\*)
+- Update list of supported quantization types
+
+### Removed
+- Remove logging of repository directories
+
 ## [1.4.0] - 2024-02-29
 
 ### Added