109.41.00

- Added `Command.Spec.map_anon` and `map_flag`.

  ```ocaml
  (** [map_flag flag ~f] transforms the parsed result of [flag] by applying [f] *)
  val map_flag : 'a flag -> f:('a -> 'b) -> 'b flag

  (** [map_anons anons ~f] transforms the parsed result of [anons] by applying [f] *)
  val map_anons : 'a anons -> f:('a -> 'b) -> 'b anons
  ```

- Fixed `Unix.open_flag` to compile with OCaml 4.01.

  It needed the additional constructor `O_CLOEXEC`.