Summary
- proper use of flag;
- clarified signature;
- tuned names;
- finally expose interrupt, similar to ML;
- Standard_Thread for isabelle command-line tools;
- tuned -- Command_Line.tool is already part of Isabelle_Tool;
- clarified signature;
- clarified signature;
- thread pool with Standard_Thread workers; tuned signature;
- clarified signature;
- support for uninterruptible execution;