fact: Definition cat_equiv_to_catiso_weq (C D : precategory) : cat_equiv C D ≃ catiso C D.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.whiskering UniMath.CategoryTheory.catiso