Merge branch 'devel'

CMakeLists.txt

doc/changelog.md

doc/lua_api.md

include/connectivity.h

include/eigen.h

include/entity_data.h

include/gmsh_io.h

include/gpu_support.hpp

include/kernels_gpu.h

include/maxwell_common.h

include/maxwell_interface.h

include/param_loader.h

include/physical_element.h

include/reference_element.h

include/silo_output.hpp

include/types.h

share/binde_simplified/params_binde_simplified.lua

src/entity.cpp

src/kernels_cuda.cu

src/maxwell_common.cpp