Add a release note about statusbar internal hierarchy changes

README.in

@@ -27,6 +27,16 @@ Installation
 See the file 'INSTALL'
 
 
+Release notes for 2.20
+======================
+
+* GtkStatusbar now has a message area (see gtk_status_bar_get_message_area)
+  which makes it easy to place additional widgets inside the statusbar
+  frame or to replace the label widgets. Previously, this was only possible
+  by accessing the innards of the statusbar widget directly. Applications
+  which are doing so may need some adjustments, since the addition of the
+  message area changed the internal widget hierarchy.
+
 Release notes for 2.18
 ======================
 

docs/reference/gtk/gtk-sections.txt

@@ -3611,6 +3611,7 @@ gtk_statusbar_pop
 gtk_statusbar_remove
 gtk_statusbar_set_has_resize_grip
 gtk_statusbar_get_has_resize_grip
+gtk_statusbar_get_message_area
 <SUBSECTION Standard>
 GTK_STATUSBAR
 GTK_IS_STATUSBAR
@@ -4295,6 +4296,7 @@ gtk_tool_item_get_proxy_menu_item
 gtk_tool_item_set_proxy_menu_item
 gtk_tool_item_rebuild_menu
 gtk_tool_item_toolbar_reconfigured
+gtk_tool_item_get_text_size_group
 
 <SUBSECTION Standard>
 GTK_TYPE_TOOL_ITEM

gtk/gtkstyle.c

@@ -6737,6 +6737,8 @@ gtk_paint_resize_grip (GtkStyle           *style,
  * @height: the height of the rectangle in which to draw the spinner
  *
  * Draws a spinner on @window using the given parameters.
+ *
+ * Since: 2.20
  */
 void
 gtk_paint_spinner (GtkStyle           *style,