graphical/non-graphical user interface without external programs

Changes for 1.00 - 2024-01-20T10:11:21Z

• fix for DoD check "uncoverable"
• fixed some TODOs, spelling, documentation
• added attributes for colours (foreground and background)
• boxes without borders are now more compact in Curses
• fixed some comment headers in unit tests
• added wrapper script (BaSH) to run all examples in sequence
• enabled UTF-8 graphics in RichTerm
• running out of input in 41-curses tests now produces full stack-trace