Fixes #21: the Console.Clear() in the ConsoleScrollingLogger was causing the same problem as calling setCursor on the cursor logger.
Fixes #21: the Console.Clear() in the ConsoleScrollingLogger was causing
the same problem as calling setCursor on the cursor logger.

EntelectChallenge/2015-SpaceInvaders-TestHarness,EntelectChallenge/2015-SpaceInvaders-TestHarness