Firefox Nightly 23, weeks 1-6
Speed & memory:
- Fixed: 805241 - JS: Merge the new baseline compiler.
- Fixed: 804676 - JS: Remove dependence of Ion compilation on ScriptAnalysis::analyzeTypes.
- Fixed: 825928 - Graphics: Layers refactoring.
- Fixed: 865546 - Graphics: Large scaled images in SVG's cause choppy scrolling.
- Fixed: 854803 - Graphics: Images on slow network continously use 1 full core.
- Fixed: 600307 - Rewrite and cleanup DOMStorage code.
- Fixed: 566746 - Form history should use asynchronous storage API.
- Fixed: 697377 - Form Autocomplete should use asynchronous storage API.
For more, read Taras's Snappy blog and MemShrink blog posts.
New web technologies:
- Fixed: 765780 - Enable plugins and JavaScript in designMode.
For more, read Firefox 23 for developers.
Security & privacy:
- Fixed: 838692 - Don't allow navigating named targets from sandboxed iframes.
- Fixed: 549697 - Add click-to-play plugin UI to the addon manager.
- Fixed: 834836 - Turn on pref to block mixed active content.
Other notable fixes:
- Fixed: 858538 - Download-attribute kills WebSocket connections.
- Fixed: 560072 - Object.getOwnPropertyDescriptor throws for many DOM objects.
- Fixed: 485149 - Using box-shadow on a <fieldset> with <legend> does not follow box shape.
- Fixed: 857820 - Drop only blink effect from text-decoration: blink; and completely remove <blink> element.
- Fixed: 369180 - Proxy Authentication required while typing Search String.
- Fixed: 649216 - Remove unnecessary delay when clicking tab close buttons sequentially.
- Fixed: 636564 - [Mac] Lion-style floating scrollbars.
Sources: