Summary
- tuned;
- clarified while-loops;
- updated to postgresql-42.4.0;
- updated to flatlaf-2.4;
- updated to pdfjs-2.14.305; prefer "legacy" distribution: more portable, notably for old Node.js/Electron of VSCodium;
- more robust: retain Classpath value;
- tuned;
- mor robust;
- clarified modules;
- clarified signature;