Update CHANGELOG.md

Author: Mr-sB

CHANGELOG.md

@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Read and write csv form feature. Support table cells contain commas and double quotes.
 
+[Unreleased]: https://github.com/Mr-sB/TinyCSV/compare/v1.0.1...HEAD
 [1.1.0]: https://github.com/Mr-sB/TinyCSV/compare/v1.0.1...v1.1.0
 [1.0.1]: https://github.com/Mr-sB/TinyCSV/compare/v1.0.0...v1.0.1
 [1.0.0]: https://github.com/Mr-sB/TinyCSV/releases/tag/v1.0.0