v1.3 [LEGACY] -- Fixed incorrect z intervals with BEST_AT_ZPHOT and simulations

This release fixes a bug where the redshift confidence intervals were ignored in Monte Carlo simulations when BEST_AT_ZPHOT=1. An incorrect error message was also removed, when a galaxy had a zspec which is outside of the zphot confidence intervals (this does not matter, because only z=zspec will be used anyway).

NB: This is a "legacy" release. These versions of FAST++ are meant to reproduce the behavior of the old FAST and not introduce any other feature. If you want more fancy options and updated stuff, look for a non-legacy release.