Merge remote-tracking branch 'upstream/develop' into develop

src/gpu/core/BoundaryConditions/BoundaryConditionFactory.cpp

.../core/BoundaryConditions/BoundaryConditionFactoryTest.cpp

...ore/BoundaryConditions/BoundaryConditionKernelManager.cpp

src/gpu/core/BoundaryConditions/Outflow/Outflow.cu

src/gpu/core/BoundaryConditions/Outflow/Outflow.h

...u/core/BoundaryConditions/Outflow/OutflowNonReflecting.cu

...ditions/Outflow/OutflowNonReflectingPressureCorrection.cu

src/gpu/core/BoundaryConditions/Outflow/Outflow_Device.cuh

src/gpu/core/BoundaryConditions/Pressure/Pressure.cu

src/gpu/core/BoundaryConditions/Pressure/Pressure.h

...Conditions/Pressure/PressureNonEquilibriumCompressible.cu

...nditions/Pressure/PressureNonEquilibriumIncompressible.cu

src/gpu/core/BoundaryConditions/Pressure/Pressure_Device.cuh

src/gpu/core/GPU/GPU_Interface.h

src/gpu/core/GPU/GPU_Kernels.cuh

src/gpu/core/GPU/LBMKernel.cu

src/gpu/core/GPU/PressBCs27.cu