PySM 3.4.6

Changes

• Add FLAMINGO kinetic SZ presets ksz5 and ksz6, with documentation and comparison notebook (#261).
• Document C1 cosmological parameters, including the CAMB params.ini used for the c1 model unlensed spectra, a full parameter table, and comparison with Planck 2015 TT,TE,EE+lowP best-fit values (#262).