add 2 versions into build matrix #304

All 101 tests pass in 16s

101 tests ±0 101 ✔️ ±0 16s ⏱️ +5s
  16 suites ±0     0 💤 ±0
  16 files ±0     0 ❌ ±0

Results for commit 1842027. ± Comparison against earlier commit 642b972.