Merge with develop

.gitignore

.gitlab-ci.yml

build.sh

...rics/Sussman_redistancing/example_sussman_circle/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

install

openfpm_data

openfpm_devices

openfpm_io

openfpm_numerics

src/Amr/grid_dist_amr.hpp

src/Amr/grid_dist_amr_unit_tests.cpp

src/Grid/grid_dist_id.hpp

src/Grid/tests/grid_dist_id_unit_test.cpp