http://facebook.github.io/immutable-js/
https://github.com/facebook/immutable-js

artices
2016
https://auth0.com/blog/intro-to-immutable-js/
    https://medium.com/devschacht/sebasti%C3%A1n-peyrott-introduction-to-immutablejs-and-functional-programming-concepts-b3a6555af0ee
    https://github.com/devSchacht/translations/tree/master/articles/sebasti%C3%A1n-peyrott-introduction-to-immutablejs-and-functional-programming-concepts
https://blog.prototypo.io/memoize-immutable-efficient-memoizer-for-redux-and-other-immutable-environments-59277fefa45f