update changelog

Author: michalsn

CHANGELOG.md

@@ -3,6 +3,14 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [2.0.0](https://github.com/michalsn/codeigniter-signed-url/compare/v1.1.1...v2.0.0) - 2023-08-26
+
+### Fixes
+- Compatibility with CodeIgniter 4.4 by @michalsn in #38
+
+### Enhancements
+- Default hashing algorithm has been changed from `sha1` to `sha256` by @michalsn in #38
+
 ## [1.1.1](https://github.com/michalsn/codeigniter-signed-url/compare/v1.1.0...v1.1.1) - 2023-04-05
 
 ### Bugs