changelog-maintenancelisted

# Changelog Maintenance ## When to use this skill - **Before release**: organize changes before shipping a version - **Continuous**: update whenever significant changes occur - **Migration guide**: document breaking changes ## Instructions ### Step 1: Keep a Changelog format **CHANGELOG.md**: ```markdown # Changelog All notable changes to this project will be documented in this file. 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 - New user profile customization options - Dark mode support ### Changed - Improved performance of search feature ### Fixed - Bug in password reset email ## [1.2.0] - 2025-01-15 ### Added - Two-factor authentication (2FA) - Export user data feature (GDPR compliance) - API rate limiting - Webhook support for order events ### Changed - Updated UI design for dashboard - Improved email templates - Database query optimization (40% faster) ### Deprecated - `GET /api/v1/users/list` (use `GET /api/v2/users` instead) ### Removed - Legacy authentication method (Basic Auth) ### Fixed - Memory leak in background job processor - CORS issue with Safari browser - Timezone bug in date picker ### Security - Updated dependencies (fixes CVE-2024-12345) - Implemented CSRF protection - Added helmet.js security headers ## [1.1.2] - 2025-01-08 ### Fixed - Critical bug in payment processing - Session timeout