CollectContent: option to get attributes, besides node content

[mariusa]

Hi, thanks for this useful library!

I'm trying to get the href value of this element:

<a class="spec" href="spec.pdf"><svg>download icon</svg></a>

Tried

const spec = new CollectContent('a[class="spec"]', { name: 'spec', contentType: 'html' })

but this gets the a node content (<svg> ...), without its attributes.
Cherio has .attr('href'). Would it be possible to please support this in CollectContent, similar to contentType:'text' ?
eg

const spec = new CollectContent('a[class="spec"]', { name: 'spec', contentType: 'text', attributes: ['href'] })

This would include in result the listed attributes, besides name, data...

Thanks!

[LydiaF]

@mariusa

Maybe this helps: #29 (comment)