Update: Map

[Harris-Miller]

This MR updates map to support mapping over an array, an object, or a Functor.

Caveat: due to typescript limitations, when passing map(a) into another function as a variable, typescript defaults to the last overload, this means that while the following works:

map(toString)([1, 2, 3]); // ok
map(toString)({ a: 1, b: 2, c: 3 }); // ok

Passing to pipe only supports arrays

pipe(map(toString))([1, 2, 3]); // ok
pipe(map(toString))({ a: 1, b: 2, c: 3 }); // error

I have a few ideas for how to fix the above caveat, and I will address it in a new issue