[Hummingbird] Lazyloading content

Smush is getting image lazyloading soon so I thought that Hummingbird could maybe implement lazyloading for other site content. You could enable it on archive pages to load additional entries as the user scrolls down the page, same for search results on the search results page, and it could work on normal pages too.

We could add special CSS classes to sections on our pages to tell Hummingbird what needs to be lazyloaded. On blog pages you could have the comments section and related posts entries lazyloaded.

What do you think?