Read units information when creating an Exposures from an Excel or data frame - #1256

  1 files  ±0    1 suites  ±0   5m 59s ⏱️ +10s
810 tests ±0  809 ✅ ±0  1 💤 ±0  0 ❌ ±0 
821 runs  ±0  820 ✅ ±0  1 💤 ±0  0 ❌ ±0 

Results for commit 7ff5e83. ± Comparison against earlier commit 764352e.