(This thread documents the updates in comments; this original comment always reflects the latest version.)

Version 7.0.1 and 7.0.2

• A two-parter fixing a crasher bug (7.0.1 did a quick and dirty fix that prevented the crash; 7.0.2 fixed it more thoroughly and got lint/tests fixed up). The bug involved attributes containing newlines, which could get accidentally rewritten by the markdown parser. Completely by accident, that previously didn't cause a problem, but I did some innocuous markup changes that happened to now cause it all to misparse in the final html->tree parse. Anyway, all multiline attributes now pass through the markdown parser without being screwed up.
• More generally, if I screw something up in the future around attributes, it'll get caught nicely and print a good error message, rather than crashing bikeshed.

Version 7.0.3

• When parsing markdown links (like [foo](http://example.com)), if there was an escaped character in the destination it would get double-escaped and produce a broken link. Fixed.

Version 7.0.4

• Properly generate a failure message if bikeshed issues-list quits with an error. (It was getting caught by a catch-all to ensure JSON/markup well-formedness that made it emit a success message alongside the fatal error.)
• And while I'm in there, a few tiny fixes to bikeshed issues-list. Only user-facing thing is that I properly escape some bits of the output that weren't being escaped before.