See https://www.mozilla.org/en-US/firefox/57.0/releasenotes/
Fixes MFSA2017-24, see https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/
- Legacy extensions are now unsupported and will stop working - you've
been warned, deal with it
- a separate single content process is now enabled by default
- remove gettext MODULE (reminded by naddy@)
- build stylo css engine (for that, add patches from #1401093 and #1341234)
- remove debugger.js patch, merged upstream (#1400197)
- build webrender, it's not enabled by default at runtime yet, but one
can test it by setting MOZ_WEBRENDER=1 in the env; See
https://wiki.mozilla.org/Platform/GFX/Quantum_Render for details.
- backport patch from ratchov@ (#1221580) enabling full-duplex audio in
cubeb, for a working audio webrtc experience ! Try it...
Tested by many, thanks!