Merge pull request #42 from GPUEngineering/f/ls

update changelog

Author: ruairimoran

CHANGELOG.md

@@ -6,6 +6,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
+<!-- ---------------------
+      v1.2.0
+     --------------------- -->
+## v1.2.0 - 04-10-2024
+
+### Added
+
+- Implementation and test of QR factorisation for tall or square matrices.
+- Solve least-square problems with QR factorisation.
+- Improve documentation.
+
 <!-- ---------------------
       v1.1.0
      --------------------- -->