opacity → snap Relation

File in src/opacity	Includes file in src/snap
Giants / freedman_mean.cpp	thermodynamics / thermodynamics.hpp
Giants / freedman_mean2.cpp	thermodynamics / thermodynamics.hpp
Giants / freedman_simple.cpp	thermodynamics / thermodynamics.hpp
Giants / freedman_simple2.cpp	thermodynamics / thermodynamics.hpp
fu_waterice_cloud.cpp	thermodynamics / thermodynamics.hpp
fu_waterliquid_cloud.cpp	thermodynamics / thermodynamics.hpp
xu_waterice_cloud.cpp	thermodynamics / thermodynamics.hpp