Finalize new transport API and improve stability of QUIC implementation #407

All 3 906 tests pass, 449 skipped in 2h 12m 51s

961 files ±0 961 suites ±0 2h 12m 51s ⏱️ - 11m 24s
4 355 tests +1 3 906 ✅ +2 449 💤 ±0 0 ❌ - 1
7 973 runs +1 7 101 ✅ +2 872 💤 ±0 0 ❌ - 1

Results for commit 74eed32. ± Comparison against earlier commit 4d580b6.