Summary
- eliminated odd Unicode blanks;
- tuned whitespace;
- eliminated DOS line endings;
- eliminated tabs, assuming tab-width=8;
- eliminated tabs, assuming tab-width=4;
- updated to current Cygwin, near 3.3.5-1;
- test macOS 12 Monterey via laramac01;
- clarified GUI update;
- clarified signature;
- tuned signature;
- more GUI functionality;
- clarified signature;
- clarified component structure, concerning initialization order;