This mod modifies Leader Zombies' scale attribute to distinguish them; their hitbox is therefore bigger (height is shrunk to permit them to enter doorways). This applies to baby zombies as well as any downstream variants of Zombie (e.g. Husks, Drowned, or any modded entities extending Zombie). Leaders' sounds are also made noticeably deeper.
Thank you rotgruengelb, murderspagurder and contributors for the template on which this project is based. stonecutter-mod-template is under the MIT License.
