update changelog

wangzuo · wangzuo · commit 4e92feb7cdb1 · 2020-12-25T13:21:10.000+08:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+## 4.0.0
+
+- colors.hex returns 8-digit with alpha value
+
 ## 3.0.1
 
 - fix updating with hex input [#45](https://github.com/swiftcarrot/react-input-color/pull/45)
