Merge remote-tracking branch 'origin/master' into FD_solver

.gitlab-ci.yml

CMakeLists.txt

...merics/Sussman_redistancing/example_sussman_disk/main.cpp

...s/Sussman_redistancing/example_sussman_images_2D/main.cpp

...s/Sussman_redistancing/example_sussman_images_3D/main.cpp

...rics/Sussman_redistancing/example_sussman_sphere/main.cpp

example/Performance/memBW/Makefile

example/Performance/memBW/main.cu

example/Performance/memBW_multi/Makefile

example/Performance/memBW_multi/config.cfg

example/Performance/memBW_multi/main.cu

example/Performance/miniBUDE/main.cu

example/Vector/0_simple/main.cpp

example/Vector/7_SPH_dlb_gpu_more_opt/main.cu

openfpm_io

src/Decomposition/CartDecomposition.hpp

src/Decomposition/ie_ghost.hpp

src/Grid/grid_dist_id.hpp

src/Grid/tests/sgrid_dist_id_gpu_unit_tests.cu

src/Vector/cuda/vector_dist_cuda_funcs.cuh