[gnome-builder] todo: slow down transition duration

[Christian Hergert <chergert src gnome org>]

commit a8a9a1b073f25053b0ba140c7cfae542f1f1f8f0
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jun 25 21:45:56 2018 -0700

    todo: slow down transition duration

 src/plugins/todo/gbp-todo-panel.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/todo/gbp-todo-panel.c b/src/plugins/todo/gbp-todo-panel.c
index b06c5cb46..7a9639aff 100644
--- a/src/plugins/todo/gbp-todo-panel.c
+++ b/src/plugins/todo/gbp-todo-panel.c
@@ -288,6 +288,7 @@ gbp_todo_panel_init (GbpTodoPanel *self)
   GtkTreeSelection *selection;
 
   self->stack = g_object_new (GTK_TYPE_STACK,
+                              "transition-duration", 333,
                               "transition-type", GTK_STACK_TRANSITION_TYPE_CROSSFADE,
                               "homogeneous", FALSE,
                               "visible", TRUE,