Use nb 1.0

Author: eldruin

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 - The method `try_write` from the trait `blocking::i2c::WriteIter` trait
   has been renamed `try_write_iter` for consistency.
+- Updated `nb` dependency to version `1`.
 
 ## [v1.0.0-alpha.1] - 2020-06-16
 
@@ -28,7 +29,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Void has been replaced with `core::convert::Infallible` which should be used
   in trait implementations where methods cannot fail.
 - A new [process](https://github.com/rust-embedded/embedded-hal#how-to-add-a-new-trait)
-  has been adopted for the addition of traits to the embedded-hal. 
+  has been adopted for the addition of traits to the embedded-hal.
 - The minimum supported Rust version is 1.35 due to [this issue](https://github.com/rust-lang/rust/issues/54973).
 
 ## [v0.2.3] - 2019-05-09

Cargo.toml

@@ -15,7 +15,7 @@ repository = "https://github.com/rust-embedded/embedded-hal"
 version = "1.0.0-alpha.1"
 
 [dependencies]
-nb = { version = "0.1.1", features = ["unstable"] }
+nb = "1"
 
 [dev-dependencies]
 stm32f3 = { version = "0.8", features = ["stm32f303", "rt"] }