added liquid, ice, and total water mixing ratios and specific humidities, with equations for computing them from each other (along with water vapor), but not for computing mixing ratios from specific humidities (or vice versa)
added liquid, ice, and total water mixing ratios and specific humidities, with equations for computing them from each other (along with water vapor), but not for computing mixing ratios from specific humidities (or vice versa)

jjhelmus/atmos,atmos-python/atmos,mcgibbon/atmos,atmos-python/atmos,mcgibbon/atmos,jjhelmus/atmos