you recently fixed a few things from your patch. dunno if it was supposed to or not, but it seems to have cleared up a lot of bugs.
i found a lot of differences from org 8 to your patch, but only one from org 8 to your recent fixes: a bare ts like <2016-11-23 Wed 12:00 .+1d> shows up twice in a 2-day span, but only showed up once in org 8. i will post mce if needed.
