v1.6.0

What's Changed

• feat(sampling): repeat rows and report the difference a run could actually detect (P1) by @lopadova in #49
• feat(regression): baselines and per-row regression gating (P2) by @lopadova in #50
• feat(online): production failures become regression tests, safely (P6) by @lopadova in #54
• feat: land P3a, P4, P5 and P6 on main by @lopadova in #55
• docs: a README opening that says what this is, and the companion cross-links by @lopadova in #56

Full Changelog: v1.5.0...v1.6.0