3.1.18 (unstable):

Gtk:
* Assistant: Added remove_page().
  (Murray Cumming)
* Dialog::get_content_area(): Avoid infinite loop.
  (Kjell Ahlstedt)
* Added FontChooser and FontChooserDialog, deprecating old widgets.
  (Murray Cumming)
* PrintUnixDialog::get_selected_printer(): ref-counting correction.
  (Kjell Ahlstedt) Bug #657751.
* TreeView: Added unset_drag_dest_row().
 (Murray Cumming) Bug #577986 (Hubert Figuiere, Johannes Schmid)

Build:
* Updated Visual C++ Projects
	(Chun-wei Fan)