roadmap update

OK, here’s where we’re at:

I’ve closed a number of tickets, but still have a few to deal with
(some of them kind of big). I’ve assigned a couple to Frank to resolve
with specific spec and schema proposals. If anyone else has feedback,
please add them.

Two obvious questions are:

  1. date localization. I think we need this, but it’s tricky.

  2. date collapsing algorithms; any other than chicago we should add?

A more minor one: should we change the “page” variable to “pages” for
somewhat better clarity?