tuned signature;

more robust: proper bound checks;

enforce rebuild of Isabelle/ML, after various changes to build database management;

clarified modules;

clarified signature: manage "verbose" flag via "progress";

clarified treatment of "verbose" messages, e.g. Progress.theory(); always store messages within database, with explicit "verbose" flag: client-side will decide about output;

proper "val verbose" (amending 2e2b2bd6b2d2);

tuned whitespace;

more robust signature: avoid totally adhoc overriding (see also Build_Process.progress vs. build_progress);

support progress backed by database; moved Build_Progress.Context.progress/log to class Build_Process: database is available here;

tuned;

tuned messages;

clarified signature: require just one "override def echo(message: Progress.Message): Unit";

tuned signature;

tuned signature;

clarified signature: more uniform Progress.verbose, avoid adhoc "override def theory()";

proper Output.writeln_text (with clean_yxml) for all instances of Progress.echo;

merged

more database content; clarified signature; tuned comments;

tuned signature;

tuned whitespace;

tuned signature;

merged

More of Eberl's material

Some new lemmas. Some tidying up

detect duplicates in Sledgehammer output -- suggested by Larry Paulson

got rid of 'important message' mechanism in SystemOnTPTP (which is less used nowadays)

merged

clarified execution context: main work happens within Future.thread; clarified signature: only one "join" operation;

clarified timeout: closer to actual process;

tuned names;

clarified names;