This was not intended,  only indentation was intended (no pun indented).

Seriously, omitting the newline makes the -i mode more useful as we can
now use syntax like:

    mkusage "topic" \
      --
      "topics:" \
      "${topics[@]}"

That is much less code, especially if the list we wanted to include is
already in array.

Bash 4.4 and later does not quote array declaration when `declare -p` is
used.

The only purpose of the binary is to show local Shellfu path and it's
in every single Shellfu script.  Let's save people some typing.

These variables are not specific to shellfu internals but in all ways
specific to pretty.sh module.  The prefix is mostly historical cruft.

Let's clean that up.

 *  Added support for "options", "commands" and plain
    sections.

 *  Changed default for multi-line usage lines to use
    header rather than prefix.

so that tfkit can now be tracked in separate repo.  (In future we might
add it as submodule)