Merge pull request #493 from Nitrokey/history-buffer-view-dedup

Implement HistoryBufferView on top of #486

Author: Dirbaio

CHANGELOG.md

@@ -28,6 +28,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Added `StringView`, the `!Sized` version of `String`.
 - Added `MpMcQueueView`, the `!Sized` version of `MpMcQueue`.
 - Added `LinearMapView`, the `!Sized` version of `LinearMap`.
+- Added `HistoryBufferView`, the `!Sized` version of `HistoryBuffer`.
 
 ### Changed