Control.Comonad.Cofree should have to inits what duplicate is to tails

[Gurkenglas]

It would be Cofree f a -> Cofree f [a] and turn a tree into a tree of finite paths from its root to each node.

(gotta look at the following tomorrow when I'm less sleepy:)

<Gurkenglas__> Control.Comonad.Cofree should have to inits what duplicate is to tails Gurkenglas__: iirc the streams package has causal and anticausal streams for one of them duplicate is that inits-like operation