Log Message:
Changes 2.8.0:

API additions since 2.6:

Gtk:
* AboutDialog: Added set/get_wrap_license() and property.
* CellRenderer: Added "sensitive" property.
* ComboBoxText, ComboBoxEntryText:
  - Deprecated clear() in favour of new clear_items() method,
  because clear() exists in the base CellLayout class and is
  very different.
  - Added remove_text() to remove items one at a time.
* Dialog: Added get_response_for_widget().
* EntryCompletion: Added properties, get/set_popup_set_width(),
  get/set_popup_single_width().
* FileChooser: Added get/set_do_overwrite_confirmation(
* Iconview: Added get_item_at_pos(), get_visible_range(), get/set_cursor(),
  scroll_to_path().
* TreeRowReference: Added get_model().
* TreeView:
  - Added unset_model().
  - Added const versions of get_path_at_pos(),
  get_cell_area(), get_background_area(), get_visible_rect(),
  widget_to_tree_coords(), tree_to_widget_coords().
  - Added get_visible_range().
* TreeView::Column: Added queue_resize().
* Sizegroup: Added ignore_hidden property.
* Stock: Added FULLSCREEN, LEAVE_FULLSCREEN, and INFO stock items.
* Widget: Added drag_source_set_icon(const Glib::ustring& icon_name).
* Window:
  - Added urgency_hint property, and get/set_urgency_hint().
  Added present(timestamp) overload.

Gdk:
* Colormap: Deprecated alloc_colors() and  free_colors().
  Add free_color() for use with alloc_color().
* Cursor: Added get_image() and a Cursor(name) constructor.
* DragContext:Added set_icon(const Glib::ustring& name).
* Pixbuf: Added a save_to_buffer() overload without the options
  parameters.
* Window: Added move_region().