YAM errors

This is ok, but the table isn't:

%[ oops! a table without column separators! %]

...and some other stuff:

%contentz

% 1 faulty heading

Lonely verbatim end: %>

More table errors:

%[ | *header col 1* | *header col 2* --- | row 1 col 1 | col 2 | --- | row 2 col 1 col 2 | %]

Errors and warnings from included files will be picked up:

%include(yam-errors-min.yam)

Becomes:

%[ x %] y

z

Single-item lists generate a warning,

• because they might easily be a misplaced "-".