chore: Update CHANGELOG for v0.2.0 release

Author: plusplusoneplusplus

CHANGELOG.md

@@ -7,6 +7,22 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.0] - 2025-07-30
+
+### Added
+- Run_to_completion feature for synchronous script execution
+- PyEval functionality for secure Python expression evaluation
+- GHC script support
+- Submit.sh script for automated code submission workflow
+- Complete DataFrame UI and API enhancements with responsive design
+- Enhanced DataFrame web interface with comprehensive templates and JavaScript functionality
+- DataFrame web page routes and template improvements
+- Plugin management documentation
+
+### Fixed
+- Missing DataFrame web page routes
+- Template syntax errors
+
 ## [0.1.0] - 2024-06-22
 
 ### Added