[ruby-gnome2-devel-en] Gtk::TreeIter and Model missing method and name change

[Detlef R. <det...@gm...>]

Hi,

with Gtk3 gi bindings the Gtk::TreeIter#first_child method is missing. 
Does Gtk::TreeIter.nth_child(0) exactly the same?

Also the Gtk::TreePath#up! and #down! methods are changed to 
Gtk::TreePath#up and down. Is that intended?

Cheers, detlef