The current default formatting is not ideal and this improves
the situation by formatting the output more intuitiv.

1) All object keys are now indented by 2 characters instead of
   sometimes 2 and sometimes 3 characters.
2) Each object key will now use an individual line instead of
   sharing a line potentially with multiple object keys.
3) Long strings will now be split into multiple lines in case
   they exceed the "lineBreak" option length (including the
   current indentation).
4) Opening braces are now directly behind a object property
   instead of using a new line.

util.inspect can actually receive any property and the description
was wrong so far. This fixes it by renaming the argument to
value and also updating the description.

Using a custom inspect function on the inspected object is
deprecated. Remove the reference from the option description
to make sure the user will read about the deprecation in the
more detailed description.

In case the structured option is used, it will now print

  "[Function: foo] {\n  property: 'data'\n}"

instead of

  "{ [Function: foo]\n  property: 'data'\n}"