First official release

The work for this release has massively increased the reliability and performance of the app; which in turn has made for a more enjoyable user experience. Improvements include:

• 🖥 Refactored and simplified UI
• 💅 Syntax highlight more languages
• ⚙️ Added service worker
• 🔍 Better dependency resolution
• 🗂 Handle more file extensions
• 📑 Render markdown files
• 🌸 Format code using prettier

Thanks to all the hard work done by @alex-saunders and @kiraarghy