isabelle update_cartouches;
modernized header uniformly as section;
updated news
use 'datatype_new' (soon to be renamed 'datatype') in Isabelle's libraries
avoid explicit encoding -- acknowledge UTF-8 as global default and Isabelle/jEdit preference of UTF-8-Isabelle;
modernized primrec
added encoding spec for jEdit;
isatool fixheaders;
Chinese Unicode example;