tests: Add regression tests for unpickling nitypes 1.0.0 objects - #235

    56 files  +    45      56 suites  +45   26m 15s ⏱️ + 25m 5s
 2 294 tests +    53   2 292 ✅ +    53   2 💤 ± 0  0 ❌ ±0 
65 656 runs  +41 166  65 602 ✅ +41 132  54 💤 +34  0 ❌ ±0 

Results for commit 15ec9ac. ± Comparison against earlier commit 9e4701c.