Creates a minimal status board.

Jobs can be added to the minimal status board, just as with the standard status board.

However, only a limited number of job channel values are accepted: Strings and prefixes (via set-prefix). Other values are ignored. When the prefix or summary changes, a fresh output line is printed to *out*.

This is suitable for development use, when inside a REPL or terminal that doesn’t support terminal capabilities; this includes, unfortunately, the Cursive IDE (at least, at the time of writing).