Rename the futures feature to unstable-features

Author: lachlansneff

Cargo.toml

@@ -18,8 +18,7 @@ version = "1.0.0-alpha.4" # remember to update html_root_url
 [features]
 # Enabling this feature enables the `futures` module using generic associated types (GATs), which are still unstable.
 # Therefore, this feature requires compiling on nightly.
-futures = []
-default = ["futures"]
+unstable-futures = []
 
 [dependencies]
 nb = "1"

src/lib.rs

@@ -407,12 +407,12 @@
 #![doc(html_root_url = "https://docs.rs/embedded-hal/1.0.0-alpha.4")]
 #![deny(missing_docs)]
 #![no_std]
-#![cfg_attr(feature = "futures", feature(generic_associated_types, min_type_alias_impl_trait))]
+#![cfg_attr(feature = "unstable-futures", feature(generic_associated_types, min_type_alias_impl_trait))]
 
 pub mod blocking;
 pub mod fmt;
 pub mod nb;
-#[cfg(feature = "futures")]
+#[cfg(feature = "unstable-futures")]
 pub mod futures;
 pub mod prelude;