Merge branch 'master' into collected-small-fixes

doc/src/Manual.txt

doc/src/Section_howto.txt

doc/src/Section_python.txt

examples/COUPLE/simple/in.lj

examples/COUPLE/simple/simple.c

examples/COUPLE/simple/simple.cpp

python/examples/simple.py

python/lammps.py

src/KOKKOS/Install.sh

src/KOKKOS/fix_qeq_reax_kokkos.cpp

src/KOKKOS/fix_reaxc_bonds_kokkos.cpp

src/KOKKOS/fix_reaxc_bonds_kokkos.h

src/KOKKOS/fix_reaxc_species_kokkos.cpp

src/KOKKOS/fix_reaxc_species_kokkos.h

src/KOKKOS/neighbor_kokkos.cpp

src/KOKKOS/neighbor_kokkos.h

src/KOKKOS/pair_kokkos.h

src/KOKKOS/pair_reax_c_kokkos.cpp

src/KOKKOS/pair_reax_c_kokkos.h

src/USER-REAXC/compute_spec_atom.cpp