Merge branch 'master' into 'master'

apps/benchmarks/FlowAroundSphereCodeGen/CMakeLists.txt

apps/benchmarks/PhaseFieldAllenCahn/CMakeLists.txt

apps/tutorials/codegen/CMakeLists.txt

src/CMakeLists.txt

src/core/mpi/Datatype.h

src/core/mpi/MPIWrapper.h

src/core/timing/CMakeLists.txt

src/core/timing/DeviceSynchronizePolicy.h

src/core/timing/Timer.h

src/core/timing/TimingNode.cpp

src/core/timing/TimingNode.h

src/core/timing/TimingPool.cpp

src/core/timing/TimingPool.h

src/core/timing/TimingTree.cpp

src/core/timing/TimingTree.h

src/gpu/AlignedAllocation.cpp

src/gpu/CMakeLists.txt

src/gpu/DeviceSelectMPI.cpp

src/gpu/DeviceSelectMPI.h

src/gpu/DeviceWrapper.h