change the log

CHANGES_en.md

 # Change Log
 
+### 2.4.0 - 2021-07-07
+
+#### Breaking Changes 📣
+
+- Upgrade Cesium to version 1.84.0
+
+#### Additions 🎉
+
+- Add bounce primitive overlays
+- Add model collection primitive
+
+#### Fixes 🔧
+
+- Refine type property
+- Improve mouse event
+
 ### 2.3.2 - 2021-07-25
 
 #### Additions 🎉

CHANGES_zh.md

 # Change Log
 
+### 2.4.0 - 2021-07-07
+
+#### Breaking Changes 📣
+
+- 升级 Cesium 到 1.84.0 版本
+
+#### Additions 🎉
+
+- 添加跳动图元覆盖物
+- 添加模型结合图元
+
+#### Fixes 🔧
+
+- 完善类型属性
+- 完善鼠标事件的管理
+
 ### 2.3.2 - 2021-07-25
 
 #### Additions 🎉