chore: bring CHANGELOG.md up to date

Author: trevorbernard

CHANGELOG.md

@@ -16,14 +16,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Base64 encoding for clipboard data
 - Comprehensive testing suite with unit and integration tests
 - GitHub Actions CI workflow for automated testing and building
+- GitHub Actions release workflow
 - Development environment with justfile for task automation
 - Nix package support with flake configuration
 - MIT License
 - CI build badge in README
+- coreutils package for sha256sum support
 
 ### Changed
 - Enhanced nix package configuration with proper metadata
 - Improved development workflow with linting and formatting tools
+- Implement streaming base64 encoding for memory efficiency
+- Remove unnecessary BufReader wrappers for improved performance
 
 ### Fixed
 - Simplified nix configuration by removing unnecessary rust overlay
+- Correct release workflow trigger conditions
+- Add contents write permission to release workflow