Merge branch 'feature/collisions' into develop

CMakeLists.txt

README.rst

TurTLE/DNS.py

cpp/base.hpp

cpp/full_code/static_field.cpp

cpp/hdf5_tools.cpp

cpp/hdf5_tools.hpp

cpp/particles/abstract_particles_system.hpp

cpp/particles/p2p_computer.hpp

cpp/particles/p2p_computer_empty.hpp

cpp/particles/p2p_cylinder_collisions.hpp

cpp/particles/p2p_distr_mpi.hpp

cpp/particles/p2p_ghost_collision_base.hpp

cpp/particles/p2p_ghost_collisions.hpp

cpp/particles/p2p_merge_collisions.hpp

cpp/particles/particles_system.hpp

tests/run_all_tests.sh