Update changelog

TravisCardwell · TravisCardwell · commit 5f1af798b613 · 2020-08-23T08:50:02.000+09:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -24,7 +24,7 @@ following conventions:
 
 [KaC]: <https://keepachangelog.com/en/1.0.0/>
 
-## Unreleased
+## 0.3.0.0 (2020-08-23)
 
 ### Breaking
 
