A simple, lightweight and extensible command line argument parser for rust codebases.

This crate is fairly similar to the javascript package commander-js. To get started, create an instance of the program struct and use it to add commands. The following is an example:

```rust

let mut program = Program::new();

program
    .version("0.1.0")
    .description("An example CLI")
    .author("Author's name");

program
    .command("test <app-name>")
    .alias("t")
    .description("A test command")
    .option("-s --skip", "Skip checking/installing the dependencies")
    .option("-p --priority", "The priority to use when testing apps")
    .action(|vals, opts| {
        dbg!(vals);
        dbg!(opts);
    })
    .build(&mut program);

```

You can also override the default behavior of the program. You can edit the Themes and how information is printed out to stdout as follows:

rust program.on(Event::OutputVersion, |p, v| { println!("You are using version {} of my program", v); println!("This program was authored by: {}", p.get_author(); });

Refer to docs.rs for full documentation on the crate.