block-padding: update changelog (#672)

Author: newpavlov

block-padding/CHANGELOG.md

@@ -4,11 +4,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## 0.3.0 (2020-12-08)
+## [UNRELEASED]
+### Added
+- `Iso10126` padding algorithm ([#643])
+
 ### Changed
 - The `Padding` trait methods now work with blocks instead of byte slices. ([#113])
 
 [#113]: https://github.com/RustCrypto/utils/pull/113
+[#643]: https://github.com/RustCrypto/utils/pull/643
 
 ## 0.2.1 (2020-08-14)
 ### Added