陈丹的博客Mozilla Firefox 44 今日发布，今后发布的Firefox无论Beta还是正式版都会开始支持64位系统，新版带来了新的警告页面，在证书状态异常和连接可能带来不安全的情况下会自动提醒用户，同时44版本开始支持在无法播放MP4/H.264的机器上自动切换WebM/VP9。
下载地址:
https://download-installer.cdn.mozilla.net/pub/firefox/releases/44.0/
New
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Improved warning pages for certificate errors and untrusted connections
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Enable H.264 if system decoder is available
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Enable WebM/VP9 video support on systems that don't support MP4/H.264
Fixed
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Windows XP and Vista screensaver doesn't disable when watching videos (Bug 1193610)
Changed
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To support unicode-range descriptor for webfonts, font matching under Linux now uses the same font matching code as other platforms
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Use a SHA-256 signing certificate for Windows builds, to meet new signing requirements
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Firefox has removed support for the RC4 decipher
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Firefox will no longer trust the Equifax Secure Certificate Authority 1024-bit root certificate or the UTN – DATACorp SGC to validate secure website certificates
Developer
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Right click on a logged object in the console to store it as a global variable on the page
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Visual tools for Animation:
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View/Edit CSS animation keyframe rules directly in the inspector
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Visually modify the cubic-bezier curve that drives the way animations progress through time
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Discover and scrub through all CSS animations and transitions playing on the page
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Learn more: http://devtoolschallenger.com/
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Visual tools for Layout and Styles:
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Display rulers along the viewport to verify size and position and use the measurement tool to easily detect spacing and alignment problems
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Use CSS filters to preview and create real-time effects like drop-shadows, sepia, etc
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Learn more: http://devtoolschallenger.com/
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New memory tool for inspecting the memory heap
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Built-in JSON reader to intuitively view, search, copy and save data without extensions
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Jump to function definitions in the debugger with Cmd-Click
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WebSocket Debugging API and add-on
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The rule view now displays styles using their authored text,and edits in the rule view are now linked to the style editor
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Add-on signing enforcement
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