Summary
- Added tag Isabelle2023-RC2 for changeset 53b59fa42696
- prefer Output.writeln for theory "results", as opposed to Output.state for genuine proof states (see f8c412a45af8, c668735fb8b5, ecf80e37ed1a);
- revert adhoc change ab9cc7cda0ec: lacks reasoning (and discussion);
- output panel: don't discard already filtered messages
- merged
- tuned signature: more operations;
- avoid excessive accumulation of garbage, for profiling of huge sessions;
- clarified signature: systematic use of Properties.make_string;
- tuned;
- support for let in Alethe name bindings;
- merged
- A few more cosmetic changes to proofs
- merged
- tidying a few proofs a bit more
- partly tidied some truly horrible proofs