Changes from Mercurial (hg http://isabelle.in.tum.de/repos/isabelle/ default)
Summary
- NEWS;
- more careful handling of interrupts, notably for Isabelle/jEdit Scala Console;
- clarified signature: more uniform treatment of stopped/interrupted state;
- proper asynchronous GUI interaction for somewhat heavy JEdit_Sessions.session_build check;
- tuned signature --- avoid confusion with init_view(buffer: Buffer, text_area: JEditTextArea);