`some` and `none` (on their cats branch <https://g...

# arrow

[simon.vergauwen]

some and none (on their cats branch https://github.com/julien-truffaut/Monocle/blob/cats/core/shared/src/main/scala/monocle/std/Option.scala). On master they still use scalaz which is just and empty, but also there they conflict with the syntax naming.