WIP:Implementation of Rho+RMS MET algorithm with a LUT
Added alternative MET algorithm similar to Rho+RMS in the gFEX, but pulling RMS from a LUT instead of calculating it in-time. @bcarlson
Added alternative MET algorithm similar to Rho+RMS in the gFEX, but pulling RMS from a LUT instead of calculating it in-time. @bcarlson