Hello! I am finally making my first small contribution to org-mode! I've added both U+0130, "LATIN CAPITAL LETTER I WITH DOT ABOVE" 'İ' & U+0131, "LATIN SMALL LETTER DOTLESS I", "ı", accessed with '\Idot{}' and '\inodot{}'. I'm unsure if I've got the Latin-1 encoding down, so I've included it in a *.diff file as well.