Starting to add fields to the domain.
updated issues to work on (in no particular order)
Updating comment for vtk on Np_write
adding double as lua function call argument
handling auxilary / derived materials properties
comment fix
Adding the material properties Zs and Zp to the glue. Need to check the
stability of this for variable materials and projections.
initialize the lsrk scheme. Need to fix it so the multi boundary conditions can
be used
updated issues with boundary conditions and projection issues
printing message about what's being used in the init
handling the time step modification and simple parameter plotting.
output and lua issues