Merge branch 'walberla2'

.gitignore

CMakeLists.txt

Makefile

README.md

cmake/FindwaLBerla.cmake

cmake/pairs-config.cmake.in

data/planes.input

data/sd_planes.input

examples/dem2.py

examples/lift.py

examples/lj_embedded.py

examples/lj_onetype.py

examples/modular/force_reduction.cpp

examples/modular/force_reduction.py

examples/modular/sd_1.cpp

examples/modular/sd_2.cpp

examples/modular/sd_3_CPU.cpp

examples/modular/sd_3_GPU.cu

examples/modular/sd_4.cpp

examples/modular/spring_dashpot.py