stan 0.0.4

NATS Streaming client based on official NATS rust client
Documentation 
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# stan-rs
[![License Apache 2](https://img.shields.io/badge/License-Apache2-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0)
[![Crates.io](https://img.shields.io/crates/v/stan.svg)](https://crates.io/crates/stan)

NATS Streaming client wrapper built on top of [NATS.rs](https://github.com/nats-io/nats.rs)

Just a very early prototype.

Supports publishing and basic subscription.

## Installation

```toml
[dependencies]
nats = "0.9.7"
stan = "0.0.3"
```

## Example useage:

```rust
use nats;
use stan;
use std::{io, str::from_utf8};

fn main() -> io::Result<()> {
    let nc = nats::connect("nats://127.0.0.1:4222")?;
    let client = stan::connect(nc, "test-cluster", "rust-client-1")?;

    println!("Connected: {:?}", client);

    println!("sending message 1");
    client.publish("foo", "hello from rust 1")?;

    let sub_handler = client.subscribe("foo", Some("foo-2"), None)?.with_handler(|msg| {
        println!("{:?}", from_utf8(&msg.data));
        Ok(())
    });

    client.publish("foo", "hello from rust 2")?;
    client.publish("foo", "hello from rust 3")?;

    sub_handler.unsubscribe()?;

    client.publish("foo", "hello from rust 4")?;
    Ok(())
}

```

## Development

To start a local nats streaming server for testing:

```
docker run -p 4222:4222 -p 8222:8222 nats-streaming
```