📝 CHANGELOG.md

Author: pboling

CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+Since version 2.0.0, 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).
+
+## [Unreleased]
+### Added
+### Changed
+### Fixed
+### Removed
+
+## 2.0.0 - 2024-09-04
+### Changed
+- Upgraded to rack v2+
+- Switched ruby-openid => ruby-openid2
+### Fixed
+- Compatibility with Ruby 2.7+
+### Removed
+- Support for Ruby < 2.7