Create CHANGELOG.md

Author: bokuweb

CHANGELOG.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/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## @0.0.63 (12. April, 2022)
+
+- Support `filter` expression for query and scan.
+  You can pass `filter_expression` like following.
+
+``` rust
+let filter = Scan::filter_expression(Scan::num()).eq(1000);
+let res = client.scan().filter(filter).run().await.unwrap();
+```