derive(FromArgs) references nonexistent #[argh(remaining)]

[max-heller]

#[argh(remaining)] seems to no longer exist and have been replaced by #[argh(greedy)]

argh/argh_derive/src/lib.rs

Line 159 in 39b3091

"Expected one of: `switch`, `option`, `remaining`, `subcommand`, `positional`",