Addons is a plugin that extends Ashita by exposed its core functionality and extensibility to Lua scripting. Users can create addons, similar to plugins, in a pure scripting language that can be easily loaded, unloaded and reloaded on the fly.
Each addon runs inside of its own Lua state helping ensure stability of the addons and Addon plugin. If a single addon has a problem, it will not cause other addons to stop working.
For those interested in developing Addons, check out the addons documentation for more information.