Updated cargo version and changelog for release v0.2.4

Author: ryankurte

CHANGELOG.md

@@ -16,6 +16,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   was incorrectly implemented for `v1::OutputPin` values.
 
 
+## [v0.2.4] - 2020-06-10
+
+### Added
+
+
+### Changed
+
+- Fix for `dyn` traits in fmt.rs
+- Remove `#![deny(warnings)]`, now imposed y CI
+- Updates stm32f30x from 0.6.0 to 0.8.0
+
 ## [v0.2.3] - 2019-05-09
 
 ### Added

Cargo.toml

@@ -11,7 +11,7 @@ license = "MIT OR Apache-2.0"
 name = "embedded-hal"
 readme = "README.md"
 repository = "https://github.com/japaric/embedded-hal"
-version = "0.2.3"
+version = "0.2.4"
 
 [dependencies.void]
 default-features = false