Test exception type on failure.
Test exception type on failure.

When we stop retrying, because of recurring exception
we expect the decorator to raise the last raised exception
without any wrapping (if wrap_exception==False)
cf #8
We test this behavior in a new unit test.

muhammad-ammar/retrying,underrun/retrying,jd/tenacity,varunarya10/retrying,harlowja/retrying,cyrusd/retrying,william-silversmith/tenacity,JioCloud/retrying,rholder/retrying,bodenr/tenacity