Release v0.1.1

v.0.1.1 release notes:

• updated core policy checking mechanism.
  now tracked_ptr also supports checking on destructor calling
• added new accessing policy: must_destruct_by_same_thread_constructed
  the new policy checks if created source has destructed on the same thread that its created

  auto test_ptr = make_tracked_ptr<TestingClass, 
      exceptions::throw_on_exception<exception>, 
      must_destruct_by_same_thread_constructed>();
  
  ASSERT_NO_THROW(test_ptr->doubled(1));
  std::thread th([&] { 
      ASSERT_THROW(test_ptr.reset(), test_exception); 
  });
  th.join();