few changes in function killAllObservers()
Merge commit 'da80524b6a1e78442d158623702ba35ae1d27a0c'

* commit 'da80524b6a1e78442d158623702ba35ae1d27a0c':
  killAllObservers test added.
  Execution time for the tests added.
  Tests now execute examples. #18
  Changes to remove all testing errors. #52
  Basic tests for UnitTest added.
  Memory tests were moved to alternative.
  State metatable was removed as it was useless.