PwnChickenLay v2.1 - Chickens with names get custom drops!
Refactored the listener to use a new api method that is more accurate for determining if the egg dropper is a chicken, which allows us to determine if the chicken has a nametag.
Added "custom" section to the config.yml for named chickens, that allow them to override biome conditions.
preface a replacement item with "e_" and an entity type, to make the chicken spawn an entity and not a material!