[grn]

Changelog:

    NEW Web Audio support (https://hacks.mozilla.org/2013/10/songs-of-diridum-pushing-the-web-audio-api-to-its-limits/)
    NEW The find bar is no longer shared between tabs
    CHANGED If away from Firefox for months, you now will be offered the option to reset it to its default state while preserving your essential information
    CHANGED Resetting Firefox no longer clears your browsing session
    DEVELOPER CSS3 background-attachment:local support to control background scrolling
    DEVELOPER Many new ES6 functions implemented
    HTML5 iframe document content can now be specified inline
    FIXED Blank or missing page thumbnails when opening a new tab
    FIXED Security fixes (https://www.mozilla.org/security/known-vulnerabilities/firefox.html)

The ES6 features are:

    new ES6 math functions
    Map#forEach and Set#forEach
    Array.of
    Number.parseInt and Number.parseFloat