initial CHANGELOG implementation

ezhang6811 · ezhang6811 · commit 0bb100a2b804 · 2025-09-08T18:34:03.000-07:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+> **Note:** This CHANGELOG was created starting after version 2.11.4. Earlier changes are not documented here.
+
+## Unreleased
