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Fix: (>=Fx27) search (F3) no longer works after unloading and then restoring the tab.
Change: minVer to 27.0.
Fix: broken if allTabs element wasn't available.
Fix: (>=fx25) tab scroll position data was intermittently not updated on unload.
Change: minVer to 25.0.
Fix: sometimes a tab wasn't automatically unloaded (regression).
Fix: when restoring a session, first tab could get undimmed even if it wasn't loaded.
Change: added extra check to prevent setting unloadTimer when not necessary.
Fix: "do not load tab until selected" broken in Firefox 24.
Change: maxVersion to 24.0a1.
Fix: compatibility with Firefox 22.
Change: maxVersion to 23.0a1.
Fix: SS not initialized in Nightly 20.0a1 when starting in private browsing mode.
Change: maxVersion to 20.0a1.
Fix: failed to enter private browsing mode.
Fix: tab crop was wrong if bBypassCacheOnRestore.
Fix: improved DOMAttrModified replacement.
Change: disabled SM workaround because it causes problems in future Firefox releases.
Fix: bad tab label on load if bBypassCacheOnRestore.
Change: replaced deprecated DOMAttrModified eventlistener.
Fix: do not load background tab until selected.
Fix: generic stringbundle id caused namespace pollution.
Fix: tab state was not properly read under certain conditions.
Change: preference bWildcardKeepAddressLoaded enabled by default.
Change: increased minVersion to 17.0.
Fix: undo close tab, duplicate tab handling in Firefox 16+.