Version History of Firefox 20 (Beta 5)

• NEW - Per-window Private Browsing
• NEW - New download experience
• NEW - Ability to close hanging plugins, without the browser hanging
• NEW - Firefox will offer to reset the Awesomebar search provider, if it has been changed by third-party software or through about:config
• CHANGED - Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.)
• DEVELOPER - Continued implementation of draft ECMAScript 6 - clear() and Math.imul
• DEVELOPER - New JavaScript Profiler tool
• HTML5 - <canvas> now supports blend modes
• HTML5 - Various <audio> and <video> improvements
• HTML5 - getUserMedia implemented for web access to the user's camera and microphone (with user permission)
• FIXED - Details button on Crash Reporter (793972)
• FIXED - Unity plugin doesn't display in HiDPI mode (829284)