Add changelog.

jcs090218 · jcs090218 · commit 4dd61019da10 · 2020-03-24T16:00:08.000+08:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
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+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
+
+
+### 2020-03-24
+
+* First release.
