[Suggestion] Boolean combinator operators

[Vidarls]

I find myself combining different Freya<bool> computation quite frequently and I have made the following custom operators for myself:

let (<&>) = Freya.map2 (&&)
let (<||>) = Freya.map2 (||)

Might be useful to include as part of the standard operators?

[kolektiv]

Yes, seemingly reasonable to me. I don't see why not! I'd probably make and = <&&> for consistency, but other than that, sure 😄 Would be happy to take a pull request if you get there before me!