Introduce new transport API and migrate internals to use it under the… #251

All 1 950 tests pass, 229 skipped in 23m 5s

696 files - 3 696 suites - 3 23m 5s ⏱️ - 10m 20s
2 179 tests ± 0 1 950 ✅ ± 0 229 💤 ± 0 0 ❌ ±0
4 516 runs - 46 4 006 ✅ - 26 510 💤 - 20 0 ❌ ±0

Results for commit 384d191. ± Comparison against earlier commit a5cece7.