v1.1.0: docs: update changelog for version 1.1.0 release

Added

• ✅ Markdown Support: Integrated Showdown.js for full Markdown rendering in prompt text
• ✅ Scroll Functionality: Added auto-scroll for long prompt content with 300px max height
• ✅ Enhanced UI: Improved user experience with cleaner interface

Changed

• 🔧 Markdown Library: Replaced previous markdown implementation with Showdown.js
• 🎨 Prompt Display: Updated prompt text rendering to support HTML with Markdown processing
• 🧹 Code Cleanup: Removed all console.log statements for production-ready code
• 📱 UI Polish: Removed markdown hint text for cleaner feedback interface

Fixed

• ⚡ Markdown Rendering: Fixed issue where Markdown content was displayed as plain text
• 📜 Long Content: Added proper scrolling for lengthy prompt content
• 🔒 Production Ready: Eliminated debug logging for better performance and security

Technical Details

• Showdown.js: Configured with tables, strikethrough, tasklists, and GitHub code blocks support
• DOMPurify: Maintained for XSS protection in rendered HTML
• Highlight.js: Continued support for syntax highlighting in code blocks
• Responsive Design: Enhanced scroll behavior with smooth scrolling