1.0.0-beta3 - Portable ground truth and outside-in verdicts.

Highlights since 1.0.0-beta2:
- Row assertions accept fixture UUIDs, so shipped datasets grade any
  fresh provision without re-keying (#3594736).
- every_eval_ever envelopes import into the results table, so outside-in
  and in-process verdicts share one screen (#3594739).
- Unreadable assertion input fails in place instead of grading what is
  left (#3594738).