More tests - added EnumerableTest
Wraparound fix for Enumerable.Rang
FIx for Enumerable.Cast
Fix for Enumerable.Take
Fixes for OrderBy
Another fix for Enumerable.Take
Retaken ThenBy from Mono

passing all tests
Merge remote-tracking branch 'origin/Develop' into Feature

* origin/Develop:
  Retaken ThenBy from Mono
  Another fix for Enumerable.Take
  Fixes for OrderBy
  Fix for Enumerable.Take
  FIx for Enumerable.Cast
  Wraparound fix for Enumerable.Rang
  More tests - added EnumerableTest