Add PLMIXPAR for Todd-Longstaff mixing parameter.
Add PLYADS, dealing with polymer adsorption.
Add PLYMAX, to be used calculation of the maximum polymer fluid viscosity.
Add PLYROCK, dealing with permeability reduction.
Add PLYVISC to be used calculation of effective water viscosity.
Add PLYSHEAR, to be used calculation of shear thinning/thickening.
Merge pull request #147 from qilicun/polymer_keyword

Polymer keywords