Preparing v0.5.6 release

Author: korken89

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.5.6] - 2020-09-18
+
+### Added
+
+- Added `as_mut_vec` for `String`
+- Added `set_len` for `Vec`
+- Performance improvements in `histbuf`
+
+### Fixed
+
+- `Producer` was made `Send` for single core applications
+
 ## [v0.5.5] - 2020-05-04
 
 ### Added

Cargo.toml

@@ -17,7 +17,7 @@ keywords = [
 license = "MIT OR Apache-2.0"
 name = "heapless"
 repository = "https://github.com/japaric/heapless"
-version = "0.5.5"
+version = "0.5.6"
 
 [features]
 default = ["cas"]