message: changed include files according to standard.
diff: @@ -33,7 +33,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #include <core/solver/cgs.hpp>
  -#include <core/test/utils/assertions.hpp>
  #include <gtest/gtest.h>
  @@ -41,6 +40,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #include <core/base/exception.hpp>
  #include <core/base/executor.hpp>
  #include <core/matrix/dense.hpp>
  +#include <core/test/utils/assertions.hpp>
  namespace {
  