"Generate a changelog from these commits:
- fix: resolve login timeout issue
- feat: add dark mode support
- docs: update API documentation"

"Create release notes for version 2.0:
- New dashboard design
- Performance improvements (50% faster)
- Fixed: export button not working
- Removed: legacy API v1"

"Summarize these code changes into a changelog entry"

# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/),
and this project adheres to [Semantic Versioning](https://semver.org/).

## [Unreleased]

## [2.1.0] - 2026-01-29

### Added
- Dark mode support across all pages
- Export to CSV functionality
- Keyboard shortcuts for common actions

### Changed
- Redesigned dashboard with improved navigation
- Upgraded authentication to OAuth 2.0
- Performance improvements (50% faster load times)

### Deprecated
- Legacy API v1 (will be removed in v3.0)

### Removed
- Support for Internet Explorer

### Fixed
- Login timeout issue on slow connections
- Export button not responding on mobile
- Memory leak in real-time updates

### Security
- Updated dependencies to patch CVE-2026-XXXX

## [2.0.0] - 2025-12-01
...

# What's New in Version 2.1

We're excited to announce version 2.1 with dark mode and major performance improvements!

## ✨ New Features

### Dark Mode
Finally here! Switch between light and dark themes in Settings > Appearance. Your preference syncs across devices.

### CSV Export
Export your data to CSV with one click. Find it in the Actions menu on any data view.

### Keyboard Shortcuts
Work faster with shortcuts:
- `Ctrl/Cmd + K` - Quick search
- `Ctrl/Cmd + N` - New item
- `?` - Show all shortcuts

## 🚀 Improvements

- **50% Faster Loading** - Completely rebuilt our data loading pipeline
- **New Dashboard** - Cleaner design with customizable widgets
- **Better Authentication** - Upgraded to OAuth 2.0 for enhanced security

## 🐛 Bug Fixes

- Fixed login timeouts on slower connections
- Export button now works properly on mobile devices
- Resolved memory issues with real-time updates

## ⚠️ Important Notes

- **Deprecation Notice**: Legacy API v1 will be removed in version 3.0
- **Browser Support**: Internet Explorer is no longer supported

---

Questions? Contact support@example.com or visit our [Help Center](link).

# Release v2.1.0

**Release Date**: 2026-01-29
**Type**: Minor Release
**Compatibility**: Breaking changes: None

## Summary
This release introduces dark mode, CSV export, and significant performance improvements.

## Changes

### Features
| ID | Description | PR |
|----|-------------|-----|
| FEAT-123 | Dark mode theme support | #456 |
| FEAT-124 | CSV export functionality | #457 |
| FEAT-125 | Keyboard shortcuts | #458 |

### Fixes
| ID | Description | Severity | PR |
|----|-------------|----------|-----|
| BUG-789 | Login timeout on slow connections | High | #459 |
| BUG-790 | Mobile export button | Medium | #460 |

### Dependencies Updated
| Package | From | To | Reason |
|---------|------|-----|--------|
| lodash | 4.17.20 | 4.17.21 | Security patch |

## Migration Guide
No migration required for this release.

## Known Issues
- Dark mode does not apply to embedded iframes

## Contributors
@developer1, @developer2, @designer1

MAJOR.MINOR.PATCH

MAJOR: Breaking changes (incompatible API changes)
MINOR: New features (backwards compatible)
PATCH: Bug fixes (backwards compatible)

Input: feat(auth): add OAuth 2.0 support (#123)
Output: - Added OAuth 2.0 authentication support

Input: Users reported export failing on files > 10MB
Output: - Fixed export functionality for large files (> 10MB)