Merge branch 'revisions'

src/operators/operator-Q/tnlFiniteVolumeOperatorQ_impl.h

src/operators/operator-Q/tnlOneSideDiffOperatorQ.h

src/operators/operator-Q/tnlOneSideDiffOperatorQ_impl.h

src/operators/operator-curvature/CMakeLists.txt

src/operators/operator-curvature/tnlExactOperatorCurvature.h

...ators/operator-curvature/tnlExactOperatorCurvature_impl.h

src/operators/tnlDirichletBoundaryConditions.h

src/operators/tnlDirichletBoundaryConditions_impl.h

src/operators/tnlExactFunctionInverseOperator.h

src/operators/tnlExactIdentityOperator.h

src/operators/tnlExactOperatorComposition.h

src/operators/tnlExactOperatorEvaluator.h

src/operators/tnlExactOperatorEvaluator_impl.h

src/operators/tnlFunctionInverseOperator.h

src/operators/tnlIdentityOperator.h

src/operators/tnlNeumannBoundaryConditions.h

src/operators/tnlNeumannBoundaryConditions_impl.h

src/operators/tnlOperator.h

src/operators/tnlOperatorComposition.h

src/operators/tnlOperatorEnumerator.h