What's new in the WebKitGTK+ 2.20.4 release? ============================================ - Fix a crash when leaving accelerated compositing mode. - Fix non-deterministic build failure due to missing JavaScriptCore/JSContextRef.h. - Security fixes: CVE-2018-4261, CVE-2018-4262, CVE-2018-4263, CVE-2018-4264, CVE-2018-4265, CVE-2018-4266, CVE-2018-4267, CVE-2018-4270, CVE-2018-4272, CVE-2018-4273, CVE-2018-4278, CVE-2018-4284.