Waterfox

What's new in this version:

New features:
- Added support for Unicode 7.0
- Experimental support for WebCL
- Add the search field to the new tab page
- Support of Prefer:Safe http header for parental control
- mozilla::pkix as default certificate verifier
- Block malware from downloaded files
- Block malware from downloaded files
- audio/video .ogg and .pdf files handled by Firefox if no application specified

Changed:
- Removal of the CAPS infrastructure for specifying site-specific permissions (via capability.policy.* preferences). Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. The sole exception is the checkloaduri permission, which may still be used as before to allow sites to load file:// URIs.

HTML5:
- WebVTT implemented and enabled
- CSS3 variables implemented
- Devloper:
- Developer Tools: Add-on Debugger
- Developer Tools: Canvas Debugger
- New Array built-in: Array.prototype.fill()
- New Object built-in: Object.setPrototypeOf()
- CSP 1.1 nonce-source and hash-source enabled by default
- Developer Tools: Eyedropper tool added to the color picker
- Developer Tools: Editable Box Model
- Developer Tools: Code Editor improvements
- Developer Tools: Console stack traces
- Developer Tools: Copy as cURL
- Developer Tools: Styled console logs
- navigator.sendBeacon enabled by default
- Dialogs spawned from the onbeforeunload event no longer block access to the rest of the browser

Fixed:
- Search for partially selected link text from context menu
- Various security fixes

Known Issues:
- Slow shut downs lead to 'Firefox is already running' warning
- PDF.js: With some fonts, some characters might not be displayed. Affects a very small number of PDFs