Chainable methods

[71104]

Probably this is more a documentation issue.

After a quick glance, some response methods don't seem to be documented as chainable, while I'd love them to be.

e.g. I'd like to write something like this:

res.status(404).type('image/png').sendfile('png_file_without_extension');

But the status method seems to be the only one documented as chainable.

[tj]

any that do not return a value are chainable which is pretty much all the response methods

[71104]

I figured it but I can't find the place in the documentation where that is stated...