From the latest dev update :

These new methods were added

-tabs.update()
-tabs.move()
-tabs.remove()
-tabs.update()
-tabs.create()
-tabs.get()
-all tab events, except onUpdated

-tabs.getSelected()
-tabs.getAllInWindow()
-windows.getCurrent()
-windows.getFocused()
-windows.getAll(populate)
-windows.onFocusedChanged()

Things are getting better and better every week