CellRendererInvoker: in Gtk.TreeViewColumn get_cell_renderers is now get_cells
CellRendererInvoker: in Gtk.TreeViewColumn get_cell_renderers is now get_cells

Signed-off-by: Simon Schampijer <088e16a1019277b15d58faf0541e11910eb756f6@laptop.org>
Acked-by: Manuel Quiñones <6f5069c5b6be23302a13accec56587944be09079@laptop.org>

godiard/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,sugarlabs/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,gusDuarte/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,Daksh/sugar-toolkit-gtk3