v2.4.0

What's Changed

• Remove EssenceSerializer mixin by @tvdeyen in #85
• Remove element from IngredientSerializer by @tvdeyen in #84
• Allow jsonapi.rb v2.1 by @manleyac in #86
• Build .mjs (ES Modules) as well by @tvdeyen in #87

Full Changelog: v2.3.0...v2.4.0