January 5th, 2013· Remove E4X Bug 788290 Bug 788293
· Improved performance, use MutationObserver instead of DOM mutation events listeners
· Use strict mode
· Fixed Tabbar broken if TreeStyleTab instaled
· Change default pref extensions.listalltabsmenu.disable.undoclosetab to true
September 9th, 2011· Fixed flickering if searched tab does not found.
· Due to change of tree_style_tab-0.12.2011060202
· Drop support 3.5 and 3.6
May 6th, 2011· Drop Firefox 3.0
· Reverted Bug 573438 - mousewheel click in tab bar should open empty tab
· Changed due to landing the following bug.
· Bug 457187 - Make the tabs toolbar customizable
· Bug 574217 - Land TabCandy on trunk
· Bug 602964 - return to using non deterministic throbbers (remove progress line / bar implementation)
· Bug 625320 - Move "Tab Groups" to the "list all tabs" menu