Fantasy Land types have changed

[dead-claudia]

Two things need changed to retain Fantasy Land compatibility:

1. ap is now reversed: instead of this wrapping the function, the argument wraps the function.
2. The spec names are now prefixed. I'd still recommend keeping the original names for ease of use, though.

I linked to the issues instead of their related PRs to help guide you all to the rationale for the changes.

[dead-claudia]

Also, I think it might be nice for some to implement for streams Semigroup (stream.concat(other)) and Monoid (m.stream.empty() equivalent to m.stream()) as well. But that's just another orthogonal idea.

[lhorie]

Updated