Merge branch 'revisions'

src/solvers/tnlSolverMonitor.h

src/solvers/tnlSolverStarter_impl.h

tests/benchmarks/tnl-cuda-benchmarks.h

tests/unit-tests/CMakeLists.txt

tests/unit-tests/core/tnlObjectTester.h

tests/unit-tests/functions/CMakeLists.txt

tests/unit-tests/functions/tnlOperatorFunctionTest.cpp

tests/unit-tests/functions/tnlOperatorFunctionTest.h

tests/unit-tests/mesh/tnlGrid2DTester.h

tests/unit-tests/mesh/tnlGrid3DTester.h

tests/unit-tests/operators/CMakeLists.txt

tests/unit-tests/operators/diffusion/CMakeLists.txt

...unit-tests/operators/diffusion/tnlLinearDiffusionTest.cpp

.../unit-tests/operators/diffusion/tnlLinearDiffusionTest.cu

...s/unit-tests/operators/diffusion/tnlLinearDiffusionTest.h

...ests/operators/diffusion/tnlOneSidedMeanCurvatureTest.cpp

...tests/operators/diffusion/tnlOneSidedMeanCurvatureTest.cu

...-tests/operators/diffusion/tnlOneSidedMeanCurvatureTest.h

tests/unit-tests/operators/fdm/CMakeLists.txt

tests/unit-tests/operators/fdm/tnlFiniteDifferencesTest.cpp