3.0 suggestion for ViewVarsTrait set method return

[SplicePHP]

Currently the Cake\View\ViewVarsTrait::set method returns void.
It might be a good idea to return $this instead of void
Here is a use case
If I am using a cell and want to set a couple of variables it makes the code much less verbose:

  echo $this->cell('Cell::method', ....)->set('key1', 'value1')->set('key2', 'value2');

instead of:

  $cell = $this->cell('Cell::method', ....);
  $cell->set('key1', 'value1');
  $cell->set('key2', 'value2');
  echo $cell;

[markstory]

Seems reasonable to me.

[markstory]

Did you know that set() can also take an array of properties to set?

[dereuromark]

Yeah, sounds good to let it chain by default.

[dereuromark]

Closing as a PR is now open for it.