request: option to skip portions of the body

[eadmaster]

selected using the "class" or "id" attribute:

 html2text --ignore-id="mw-head" --ignore-class="printfooter" "http://en.wikiquote.org/wiki/Special:Random"

[leesei]

I would like to see a similar feature which only view specified items:

html2text --filter-id="External_links" --filter-class="thumb tright" "http://en.wikiquote.org/wiki/Special:Random"