get faster rebuild group-tabs
add editGroupTitle method
fix: arrowscrollbox
add NewGroupButton
check the group.id's tab already exists
styling
bump up version 0.1.4pre
fix: typo
change nsIStyleSheetService to xml-stylesheet
unpack true
styling for Mac OS
styling for Windows
fix: styles
add Feature
bump up version to 0.2
bump up maxVersion to 13.0a1
remove E4X
bump up version to 0.3