stabilize new channels

Signed-off-by: Marc-Antoine Perennou <[email protected]>

Author: Keruspe

Diff for: CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://book.async.rs/overview
 
 ## [Unreleased]
 
+The new `async_std::channel` submodule, introduced in 1.8.0, has been stabilized. You no longer need the `unstable` feature to use it.
+
 ## Added
 
 - Add `tokio1` feature ([#924](https://github.com/async-rs/async-std/pull/924))

Diff for: src/channel.rs

@@ -1,6 +1,4 @@
 //! Channels
 
-#[cfg(feature = "unstable")]
-#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
 #[doc(inline)]
 pub use async_channel::*;

Diff for: tests/channel.rs

@@ -1,4 +1,3 @@
-#![cfg(feature = "unstable")]
 #![allow(deprecated)]
 
 use std::sync::atomic::{AtomicUsize, Ordering};