Default slots and taps should be configurable, but not writable.
gauss: Store and use the spare as not using it can create bias with certain generators.
Add randsign to Random.
Split indexed handling off Renderable into IndexedRenderable.
Individual components do not need message-level intercepts; cut off the message/request interface at entities.
I've got no idea.
Also fix removeChildren issues. Move contains and lacks from array extension to yf.