React 16 will allow to return arrays (or maybe even more general iterators) from within render method. We can have a few choices how to support that.

• using variants in render codomain
• or adding a function of type wrap :: Array ReactElement -> ReactElement which would be just unsafeCoerce

The second choice would easier to adopt in existing projects, the first one would break a lot of classes. We could add a new type to avoid that though.