McNemar's statistical test addition: `ard_mcnemartest` #6

All 10 tests pass, 4 skipped in 2s

1 files ±0 14 suites ±0 2s ⏱️ ±0s
14 tests ±0 10 ✅ ±0 4 💤 ±0 0 ❌ ±0
30 runs ±0 22 ✅ ±0 8 💤 ±0 0 ❌ ±0

Results for commit 35f20c6. ± Comparison against earlier commit 6346913.