arguably 2.2.0

A ridiculously simple argument-parsing library.
Documentation 
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use arguably::ArgParser;

fn main() {
    let mut parser = ArgParser::new()
        .helptext("Usage: foobar...")
        .version("1.0")
        .command("boo", ArgParser::new()
            .helptext("Usage: foobar boo...")
            .callback(cmd_boo)
        );

    if let Err(err) = parser.parse() {
        err.exit();
    }
}

fn cmd_boo(_cmd_name: &str, _cmd_parser: &ArgParser) {
    println!("boo!");
}