Merge pull request #38 from SpringQL/docs/CHANGELOG

docs: add CHANGELOG

Author: laysakura

CHANGELOG.md

@@ -0,0 +1,50 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog][Keep a Changelog] and this project adheres to [Semantic Versioning][Semantic Versioning].
+
+We originally added `### For developers` sections in order to separate changes for end-users and developers.
+All other sections are for end-users.
+
+The CHANGELOG mainly includes changes only applied to the C client.
+Also check the changes in springql-core: <https://github.com/SpringQL/SpringQL/blob/main/CHANGELOG.md>.
+
+<!-- markdownlint-disable MD024 -->
+## [Unreleased]
+
+## [v0.9.0+2]
+
+Depends on springql-core v0.9.0.
+
+### Added
+
+- Better doc comments on the header file ([#35](https://github.com/SpringQL/SpringQL-client-c/pull/35))
+
+## [v0.9.0]
+
+Depends on springql-core v0.9.0.
+
+## [v0.8.0]
+
+Depends on springql-core v0.8.0.
+
+## [v0.7.1]
+
+Started to write CHANGELOG from this version.
+
+Depends on springql-core v0.7.1.
+
+---
+
+<!-- Links -->
+[Keep a Changelog]: https://keepachangelog.com/
+[Semantic Versioning]: https://semver.org/
+
+<!-- Versions -->
+[Unreleased]: https://github.com/SpringQL/SpringQL-client-c/compare/v0.9.0+2...HEAD
+[Released]: https://github.com/SpringQL/SpringQL-client-c/releases
+[v0.9.0+2]: https://github.com/SpringQL/SpringQL-client-c/compare/v0.9.0...v0.9.0+2
+[v0.9.0]: https://github.com/SpringQL/SpringQL-client-c/compare/v0.8.0...v0.9.0
+[v0.8.0]: https://github.com/SpringQL/SpringQL-client-c/compare/v0.7.1...v0.8.0
+[v0.7.1]: https://github.com/SpringQL/SpringQL-client-c/compare/v0.7.0...v0.7.1