Update to embedded-hal alpha.3

Author: eldruin

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Set default features to build both sysfs and cdev pin types
 - Removed `Pin` export, use `CdevPin` or `SysfsPin`
+- Adapted to `embedded-hal` `1.0.0-alpha.3` release.
+- Updated `nb` to version `1`.
 
 ## [v0.3.0] - 2019-11-25
 
@@ -41,7 +43,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
-- implementation of the unproven `embedded_hal::::digital::InputPin` trait. 
+- implementation of the unproven `embedded_hal::::digital::InputPin` trait.
 
 ## [v0.2.0] - 2018-05-14
 

Cargo.toml

@@ -15,12 +15,12 @@ gpio_cdev = ["gpio-cdev"]
 default = [ "gpio_cdev", "gpio_sysfs" ]
 
 [dependencies]
-embedded-hal = "=1.0.0-alpha.1"
+embedded-hal = "=1.0.0-alpha.3"
 gpio-cdev = { version = "0.3", optional = true }
 sysfs_gpio = { version = "0.5", optional = true }
 
 i2cdev = "0.4.3"
-nb = "0.1.1"
+nb = "1"
 serial-core = "0.4.0"
 serial-unix = "0.4.0"
 spidev = "0.4"