mathlib

6af37d37 - fix(category_theory/limits): require explicit instances of has_zero_morphisms (#2169)

fix(category_theory/limits): require explicit instances of has_zero_morphisms (#2169) * fix(category_theory/limits): require explicit instances of has_zero_morphisms * Fix unused arguments Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>