Add release notes for v1.2.1

Author: rahul-deka

release-notes-v1.2.1.md

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+# AdFreeTube v1.2.1
+
+## What's New
+A Chrome extension that liberates your YouTube viewing from ads, algorithm manipulation, and privacy tracking. Experience YouTube the way it should be - clean, fast, and private.
+
+## Key Features
+- **Complete Ad Blocking**: Zero advertisements during video playback
+- **Privacy Protection**: Videos don't get added to your YouTube watch history  
+- **Algorithm Freedom**: Break free from YouTube's recommendation manipulation
+- **Lightning Fast**: Seamless video loading without tracking scripts
+- **Dynamic Detection**: Automatically handles new video links as pages load
+- **Clean Interface**: Minimalist popup with status indicators
+
+## Technical Highlights
+- **Manifest V3**: Built with the latest Chrome extension standards
+- **Zero Permissions Abuse**: Only requests essential permissions for functionality
+- **Lightweight**: Minimal resource usage with efficient content scripts
+- **Cross-Platform**: Works on all Chromium-based browsers
+
+## 📦 Installation Guide
+
+### Method 1: Direct Download
+1. **Download**: Click the `AdFreeTube-v1.2.1.zip` file below
+2. **Extract**: Unzip to your preferred location
+3. **Load Extension**: 
+   - Navigate to `chrome://extensions/`
+   - Enable "Developer mode" (top-right toggle)
+   - Click "Load unpacked" and select the extracted folder
+4. **Enjoy**: Visit YouTube and click any video to experience ad-free viewing!
+
+### Method 2: Git Clone
+```bash
+git clone https://github.com/iamRahul21/AdFreeTube.git
+cd AdFreeTube
+# Follow steps 3-4 from Method 1
+```
+
+## How to Use
+1. Install the extension following the guide above
+2. Visit [YouTube.com](https://youtube.com)
+3. Browse and click any video normally
+4. Videos automatically open in new tabs without ads or tracking
+5. Check the extension popup for status confirmation
+
+## What's Under the Hood
+- **Smart URL Conversion**: Seamlessly redirects to privacy-focused alternatives
+- **Dynamic Content Handling**: Works with YouTube's dynamic page loading
+- **New Tab Management**: Maintains browsing flow while protecting privacy
+- **Minimal Footprint**: Efficient code with no unnecessary bloat
+
+## 🛡️ Privacy & Security
+- **No Data Collection**: Zero user data is collected or transmitted
+- **Local Processing**: All operations happen locally in your browser
+- **Open Source**: Full transparency with public code repository
+- **Secure Permissions**: Only requests necessary permissions for core functionality
+
+## 🐛 Bug Fixes & Improvements
+- Enhanced compatibility with YouTube's latest interface updates
+- Improved detection of dynamically loaded video elements
+- Optimized performance for faster page interactions
+- Refined popup interface with better visual feedback
+
+## System Requirements
+- **Browser**: Chrome 88+ or any Chromium-based browser
+- **Permissions**: Tabs, Active Tab, YouTube host access
+- **Storage**: < 100KB disk space
+
+## Useful Links
+- **Repository**: [GitHub - AdFreeTube](https://github.com/iamRahul21/AdFreeTube)
+- **Issues**: [Report Bugs](https://github.com/iamRahul21/AdFreeTube/issues)
+- **Info Site**: [AdFreeTube - Site](https://adfree-tube.vercel.app/)
+- **Author**: [Rahul Deka](https://rahul-deka.vercel.app/)
+
+## Pro Tips
+- Pin the extension to your toolbar for quick status checks
+- Regularly update to ensure compatibility with YouTube changes