x fixed 6DOF forcing update (CFD)
x fixed 6DOF prescribed motion (CFD)
x added explicit diffusion (NHFLOW)
x added implicit diffusion (NHFLOW)
x fixed vtu print out for immersive structures (FNPF and NHFLOW)
x fixed a problem for SFLOW when wettting and drying is turned off
x fixed continuous state file folder name (SFLOW)
x fixed relaxation wave generation (CFD)
x updated 6DOF STL mesh refinement options
x added mpi check at startup