Bring back naturalOrder export

[leMaik]

In v2, the naturalOrder export was removed, due to it not being immutable. That's not strictly true: the compare function itself is perfectly immutable, it just allows users to do non-immutable things by plugging it into Array.prototype.sort.

My use case is that I have a table library that doesn't allow sorting rows but only lets me specify a compare function to compare two rows by a column (the library e.g. manages sorting order, nested rows, sorting by multiple columns). I can't use it with v2.0.3 now. 😭

[lindsaykwardell]

Hey! I'm so sorry, I only just now saw this issue. I'm assuming you've found a different solution at this point, but if it's still a concern please let me know.