ensure list of event names is flat #118

All 647 tests pass in 7m 5s

647 tests ±0 647 ✔️ ±0 7m 5s ⏱️ - 2m 59s
    1 suites ±0     0 💤 ±0
    1 files ±0     0 ❌ ±0

Results for commit c6d83bc. ± Comparison against earlier commit 30464ee.