Add scalar.proto, generate stubs, implement converter, and add unit tests. #155

All 78 tests pass in 13s

10 files ±0 10 suites ±0 13s ⏱️ ±0s
78 tests ±0 78 ✅ ±0 0 💤 ±0 0 ❌ ±0
750 runs ±0 750 ✅ ±0 0 💤 ±0 0 ❌ ±0

Results for commit 6eca4ac. ± Comparison against earlier commit 26be1f7.