Split up the wiki TODO page?

So, if you edit the current version of the TODO page, you get this stern
warning:

> WARNING: This page is 106 kilobytes long; some browsers may have
> problems editing pages approaching or longer than 32kb. Please consider
> breaking the page into smaller sections.

Hmm ... my browser isn't failing, but I do seem to detect a certain lack
of snappiness to the edits.  But what's more worrisome is that the page
size was 85k less than a week ago.  Whatever the practical limits might
be, we are going to blow past them PDQ with that sort of bloat rate.

I think the wiki TODO needs to be broken into multiple pages.  How can
we go about that?
        regards, tom lane