Summary
- tuned layout;
- modernized generated HTML;
- tuned signature; tuned;
- added update operation;
- clarified name; tuned whitespace;
- register commands earlier, before prover startup;
- explicit preview request/response; commands, icons, menus like VSCode markdown preview; clarified Uri information (again); tuned;
- tuned layout;
- more robust -- avoid race condition wrt. Haskell output in $ISABELLE_TMP/examples/