Add simulated response latency .After(TimeSpan) - #134

  3 files  ±0    3 suites  ±0   8s ⏱️ -5s
203 tests ±0  203 ✅ ±0  0 💤 ±0  0 ❌ ±0 
403 runs  ±0  403 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 08c2b4d. ± Comparison against earlier commit e5cb9bf.