changie configuration

.changes/header.tpl.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html),
+and is generated by [Changie](https://github.com/miniscruff/changie).