fix 68: compare PBJ with Google Protobuf and tighten thresholds for f… #274

All 86 994 tests pass in 6m 25s

    216 files ±0     216 suites ±0 6m 25s ⏱️ + 1m 3s
86 994 tests ±0 86 994 ✔️ ±0 0 💤 ±0 0 ❌ ±0
87 222 runs ±0 87 222 ✔️ ±0 0 💤 ±0 0 ❌ ±0

Results for commit 4d224b6. ± Comparison against earlier commit b6445d5.