KeyError: _BUILTIN_FORMATS[8]
Created originally on Bitbucket by ccurvey
looks like we have another missing builtin format (see also issue #36 (closed)). Unfortunately, my searching skills are coming up short, and I can't figure out where to find out what "format 8" should be.
(BTW, I'm running version 1.5, which is not listed as an option on the bug reporting form.)