facet-args 0.8.0

Command-line argument parsing for the facet ecosystem
Documentation 
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Provides CLI argument parsing (WIP).

```rust
use facet_pretty::FacetPretty;
use facet::Facet;

#[derive(Facet)]
struct Args {
    #[facet(positional)]
    path: String,

    #[facet(named, short = 'v')]
    verbose: bool,

    #[facet(named, short = 'j')]
    concurrency: usize,
}

# fn main() {
let args: Args = facet_args::from_slice(&["--verbose", "--concurrency", "14", "example.rs"]);
eprintln!("args: {}", args.pretty());
# }
```