I have opam version 1.2.2 and ocaml 4.03.0. I'd like to upgrade to the latest versions of both, I suppose this would be opam 2.0.2 and ocaml 4.07.0.  I know there must be a very straightforward way to simply *install the latest* of each of these. But I don't see it. For ocaml, I believe this requires a switch. But what is the simple way to upgrade opam itself?
Thank you,

Bob Muller