API CHANGES
-----------
GPack.notebook#append_page and GPack.notebook#insert_page :
        return int instead of unit
GAction.action_group#add_action :
    removed `accel' optional parameter
GBin.alignment :
    add `padding' optional parameter
GEdit.combo_box, combo_box_entry, combo_box_text, combo_box_entry_text :
    add `active' optional parameter
GMain.Idle.add, Glib.Idle.add :
    add a `prio' optional argument
GMain.Io.add_watch, Glib.Io.add_watch :
    use a list of `conditions' insted of a single one
GTree.column_list : 
    replace method `kinds' by `types'
GWindow.message_dialog : 
    add `use_markup' optional argument
Glib :
    remove exception `Critical' and Glib.Message.handle_criticals
    remove Glib.Message.set_print_handler
    changed type of Glib.Message.set_log_handler
Gobject.Data :
    boxed, unsafe_boxed, unsafe_boxed_option : take an additional `g_type' parameter
    replace `get_fundamental' by `get_type'
GnoDruid : 
    replace druid_page by druid_page_skel

API ADDITIONS
-------------
Glib.usleep
GAssistant.*
GWindow.about_dialog (set_)?wrap_licence
GSourceView
GButton.link_button
GAction.action_skel#set_accel_group
GAction.action_group#add_action_with_accel
GAction.ui_manager#new_merge_id
GAction.ui_manager#add_ui
GBin.alignment#{set_,}{top,bottom,left,right}_padding
GMisc.calendar#{set_,}{day,month,year}
GMisc.calendar#is_day_marked
GMisc.calendar#num_marked_dates
GMisc.label_skel#selection_bounds
GMisc.label_skel#select_region
GPack.paned#{max_,min_,}position
GText.buffer#select_range
GTree.cell_layout#reorder
GTree.cell_layout#{unset,set}_cell_data_func
GWindow.message_dialog#set_markup
GdkPixbuf.from_file_at_size
GdkPixbuf.save_to_callback
GdkPixbuf.save_to_buffer
Glib.int_of_priority
Glib.Message.log
Glib.Utf8 : a bunch of unicode-related functions
Glib.Markup.Error (exception)
Glib : a couple of misc. utility functions (get_home_dir, find_program_in_path, etc.)
GtkSignal.override_class_closure
GtkSignal.chain_from_overridden
GtkSpell
