CCleaner 3.20.1750

- Added Windows Explorer Context Menu management to Startup tool.
- Added Windows 8 Release Preview compatibility.
- Added Opera 12 support.
- Updated History cleaning for Aurora.
- Updated History cleaning for Chrome Canary.
- Improved UAC bypass code.
- Improved accuracy for uninstall items installation date and size.
- Improved Scheduled Tasks detection.
- Improved cleaning algorithm duplication detection.
- Improved file and setting removal when uninstalling.
- Minor bug fixes.