wip
wip
wip
update the current index when adding/removing/moving a tab
initial mouse event handlers
emit the tabMoved signal
add drag-reorder support
Release the mouse grab the current tab is removed or tabs are made not movable.
push the removing tab to the bottom of Z order
push override cursor while dragging
update comment
temp rename just to pass browserify
add default insert/remove CSS animation
set the bottom edge of a tab to 0 by default

this is consistent with the default animations
update the tabbar example
kill off the tab mover
update the TabWidget for the new TabBar api
add a TabWidget example
rename setMaximumTabWidth -> setTabWidth and make layout tab width a public function
tweak the example tab size