Merge with upstream master

.gitlab-ci.yml

CMakeLists.txt

README.md

...arPlaneInShearFlow/ForcesOnSphereNearPlaneInShearFlow.cpp

apps/benchmarks/MeshDistance/MeshDistanceBenchmark.cpp

...marks/MotionSingleHeavySphere/MotionSingleHeavySphere.cpp

apps/benchmarks/SchaeferTurek/SchaeferTurek.cpp

apps/benchmarks/UniformGrid/UniformGrid.cpp

...ases/BidisperseFluidizedBed/BidisperseFluidizedBedDPM.cpp

apps/tools/povrayFileCompressor/main.cpp

apps/tutorials/pe/02_ConfinedGasExtended.cpp

cmake/CMakeParseArgumentsCompat.cmake

cmake/TestStdAny.cpp

cmake/TestStdFilesystem.cpp

cmake/TestStdOptional.cpp

cmake/waLBerlaFunctions.cmake

python/waLBerla/core_extension.py

python/waLBerla/cuda_extension.py

python/waLBerla/field_extension.py

src/blockforest/Block.cpp