[valgrinda]

REEF3D 23.12 (https://github.com/REEF3D/REEF3D/releases/tag/23.12) is released with a couple of additions and fixes. Make sure to use the newest REEF3D with the newest DIVEMesh.

The full list of changes in REEF3D 23.12:
x fixed FNPF coastline bug
x improved FNPF coastline
x improved FNPF wetting and drying interface
x new ioflow outflow boundary condition
x added automatic preconditioner switch for hypre_struct multigrid
x removed B70 (CFD)
x improved elevation vtu printout for NUG (CFD)
x improved outflow waterlevel calculation (CFD)
x improved inflow waterlevel calculation (CFD)
x fixed hypre2D breakdown for newer hypre versions (SFLOW and FNPF)
x fixed LSRK3 for fluid flow (CFD)
x fixed sediment transport forcing outflow (CFD)