async-stream-lite 0.1.0

Proc macro-free async/await Rust streams
Documentation 
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# `async-stream-lite`
It's [`async-stream`](https://lib.rs/crates/async-stream), but without proc macros.

```rs
use async_stream_lite::async_stream;

use futures_util::{pin_mut, stream::StreamExt};

#[tokio::main]
async fn main() {
	let stream = async_stream(|r#yield| async move {
		for i in 0..3 {
			r#yield(i).await;
		}
	});
	pin_mut!(stream);
	while let Some(value) = stream.next().await {
		println!("got {}", value);
	}
}
```

## `#![no_std]` support
`async-stream-lite` supports `#![no_std]` on nightly Rust (due to the usage of [the unstable `#[thread_local]` attribute](https://doc.rust-lang.org/beta/unstable-book/language-features/thread-local.html)). To enable `#![no_std]` support, enable the `unstable-thread-local` feature.