fact: Definition cat_path_to_cat_eq_1 (C D : precategory_data) : C = D ≃ cat_eq_1 C D.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.whiskering UniMath.CategoryTheory.catiso