I know there is the Focus library [1]. I'm not sure about prisms, traversals etc. [1] http://package.elm-lang.org/packages/evancz/focus/1.0.1/Focus http://pack

I know there is the Focus library [1]. I'm not sure about prisms, traversals etc. [1] http://package.elm-lang.org/packages/evancz/focus/1.0.1/Focus http://package.elm-lang.org/packages/evancz/focus/1.0.1/Focu...