Bump version to 3.0.3 and update changelog

Updated version number and changelog for v3.0.3.

README.md

@@ -2,7 +2,7 @@
 <img src="https://moooonet.github.io/assets/Comfy-Align//images/display.jpg" width="100%">
 <br><br>
 
-[![Version](https://img.shields.io/badge/Version-3.0.2-cyan)](README.md)
+[![Version](https://img.shields.io/badge/Version-3.0.3-cyan)](README.md)
 [![Youtube](https://img.shields.io/badge/Video-Tutorial-red)](https://youtu.be/p1niyxwsOes)
 
 </div>
@@ -12,7 +12,9 @@ ComfyUI-Align provides a powerful set of node alignment, stretching, and color c
 > _If this plugin has helped preserve your sanity, please consider giving a ⭐ to sustain the caffeine habit._
 
 ## Changelog
-
+- **v3.0.3:**
+  - Fix the issue where clicking on HEX may fail to copy
+    
 - **v3.0.2:**
 
   - Fixed the issue of shortcut keys being ineffective in Hold Mode.