update changelog

Signed-off-by: Luke-zhang-04 <[email protected]>

Author: Luke-zhang-04

CHANGELOG.md

@@ -5,6 +5,12 @@ 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).
 
+## [2.4.0] - 2021-07-10
+
+### Added
+
+-   feat(snippets): add snippets for circle() and square()
+
 ## [2.3.0] - 2021-05-27
 
 ### Added