变更日志提取器样本

# 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 authentication system
- Dark mode support

### Changed
- Updated dependencies to latest versions
- Improved error handling

## [1.2.0] - 2024-03-15

### Added
- French language support
- Export to PDF functionality
- Advanced search filters

### Changed
- Redesigned user interface
- Optimized database queries

### Deprecated
- Old API endpoints (will be removed in v2.0)

### Fixed
- Fixed login bug on Safari
- Resolved memory leak in image processing

### Security
- Updated vulnerable dependencies
- Implemented rate limiting

## [1.1.0] - 2024-02-01

### Added
- Spanish language support
- User profile customization

### Fixed
- Fixed crash when uploading large files

## [1.0.0] - 2024-01-15

### Added
- Initial release
- Basic functionality
- User registration and login

# Changelog

## [1.0.0] - 2024-01-15

### Added
- Initial release
- Basic CRUD operations
- User authentication
- REST API endpoints

### Fixed
- Fixed database connection issue
- Resolved timezone handling bug

# Project Changelog

## [2.0.0] - 2024-03-20

### Features
- feat: add user profile picture upload
- feat: implement real-time notifications
- feat: add email notification preferences

### Bug Fixes
- fix: resolve authentication token expiration issue
- fix: correct data validation in form submission
- fix: handle edge case in pagination

### Performance
- perf: optimize database query performance
- perf: reduce bundle size by 30%

### Documentation
- docs: update API documentation
- docs: add contribution guidelines
- docs: improve README examples

### Style
- style: format code with prettier
- style: standardize naming conventions

### Refactoring
- refactor: simplify user service module
- refactor: extract common utilities

### Tests
- test: add unit tests for authentication
- test: increase test coverage to 85%

### Build
- build: upgrade to webpack 5
- build: configure production optimizations

### CI
- ci: add automated deployment pipeline
- ci: configure GitHub actions

### Chore
- chore: update dependencies
- chore: upgrade to Node.js 20

# Release Notes

## v2.1.0 (March 25, 2024)

**What's New**
- Introducing brand new dashboard design
- Added dark mode support
- New widget system for customization

**Improvements**
- 50% faster page load times
- Enhanced mobile responsiveness
- Better accessibility support (WCAG 2.1 AA)

**Bug Fixes**
- Fixed issue with file uploads on mobile devices
- Corrected timezone handling in calendar view
- Resolved login session timeout problems

**Breaking Changes**
- Minimum required Node.js version is now 18.x
- API endpoint /v1/users has been moved to /v2/users

## v2.0.0 (February 28, 2024)

**Major Features**
- Complete rewrite of the core engine
- New plugin system
- Multi-language support (EN, ES, FR, DE, ZH)

**Performance**
- Reduced memory usage by 40%
- Parallel processing for large datasets
- Optimized caching strategy

**Security**
- Implemented OAuth 2.0 authentication
- Added CSRF protection
- Enhanced input validation

**Deprecations**
- Legacy API endpoints will be removed in v3.0

## v1.5.0 (January 15, 2024)

**Features**
- Added export to CSV functionality
- New notification system
- Batch operations support

**Fixes**
- Fixed critical bug in data synchronization
- Corrected calculation errors in statistics module

# Changelog

## [Unreleased]

### Added
- Beta feature: AI-powered recommendations
- Custom webhook integrations
- Advanced analytics dashboard

### Changed
- Migrating to new authentication system
- Updating API rate limits (from 1000 to 5000/hour)

### Deprecated
- Legacy sync feature (will be removed in v3.0)
- Old notification system

### Removed
- Support for Internet Explorer 11
- Legacy API v1 endpoints

### Fixed
- Beta: Fixed race condition in concurrent updates
- Beta: Improved error messages for better debugging

### Security
- Implementing 2FA for all accounts
- Adding audit log for sensitive operations

## [2.5.0] - 2024-03-10

### Added
- New reporting module
- Integration with Slack and Microsoft Teams

### Changed
- Redesigned settings page
- Improved onboarding flow

# Changelog

## [3.0.0] - 2024-04-01

### Added
- Multi-tenant support
- Role-based access control (RBAC)
- Advanced search with filters and sorting
- Real-time collaboration features
- API key management
- Custom themes and branding
- Export to multiple formats (PDF, Excel, CSV)
- Two-factor authentication
- Webhook notifications
- Data backup and restore functionality

### Changed
- Updated UI framework from v2 to v3
- Migrated from REST to GraphQL API
- Improved database schema for better performance
- Enhanced security policies
- Redesigned user onboarding flow
- Optimized asset loading strategy
- Upgraded to latest LTS Node.js version

### Deprecated
- Old authentication method (use OAuth instead)
- Legacy export endpoints (will be removed in v4.0)
- XML API format (JSON only moving forward)

### Removed
- Support for Python 2.7
- Legacy mobile app (v1.x)
- Old dashboard widgets
- Deprecated API v1 endpoints

### Fixed
- Critical security vulnerability in session handling
- Memory leak in long-running processes
- Race condition in concurrent file uploads
- Incorrect timezone conversion
- Database connection pool exhaustion
- Broken links in documentation
- Display issues on Safari browser
- Password reset email not delivered

### Security
- Patched CVE-2024-12345
- Implemented Content Security Policy (CSP)
- Added HTTP strict transport security (HSTS)
- Enabled subresource integrity (SRI)
- Regular dependency vulnerability scanning
- Security audit by external firm

### Performance
- Reduced API response time by 60%
- Optimized database queries (3x faster)
- Implemented Redis caching layer
- Lazy loading for images and components
- Code splitting for smaller bundles
- CDN integration for static assets