Merge branch walberla:master into master

.gitlab-ci.yml

apps/benchmarks/CMakeLists.txt

apps/benchmarks/NonUniformGridCPU/NonUniformGridCPU.cpp

apps/benchmarks/NonUniformGridGPU/NonUniformGridGPU.cpp

apps/benchmarks/TurbulentChannel/CMakeLists.txt

apps/benchmarks/TurbulentChannel/TurbulentChannel.cpp

apps/benchmarks/TurbulentChannel/TurbulentChannel.prm

apps/benchmarks/TurbulentChannel/TurbulentChannel.py

apps/benchmarks/UniformGridCPU/UniformGridCPU.py

apps/benchmarks/UniformGridGPU/UniformGridGPU.py

apps/benchmarks/UniformGridGPU/old_ideas/UniformGridGPU.py

apps/tutorials/basics/01_BlocksAndFields.dox

apps/tutorials/gpu/01_GameOfLife_cuda.dox

apps/tutorials/lbm/06_LBBoundaryCondition.cpp

cmake/waLBerlaFunctions.cmake

cmake/waLBerlaModuleDependencySystem.cmake

python/lbmpy_walberla/sweep_collection.py

python/lbmpy_walberla/templates/BoundaryCollection.tmpl.h

python/lbmpy_walberla/walberla_lbm_package.py

src/blockforest/communication/NonUniformPackInfo.h