1.4.25

• Add Fl_Tile::move_intersection method.
• Add Color contrast functions.
• Add Fl_Menu_::menu_box() and set_menu_box().
• Add Fl_Menu_Item::pulldown().
• Update Terminal widget and track changes in fltk Fl_Terminal widget color handling and docs by @jgriffitts.
• Update FLTK submodule.