CHANGELOG: Preapre v0.17.0 (#72)

Signed-off-by: Max Inden <mail@max-inden.de>

Author: mxinden

CHANGELOG.md

@@ -4,7 +4,7 @@ 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).
 
-## [0.17.0] - unreleased
+## [0.17.0]
 
 ### Changed
 - Updates to Rust 2021 Edition. See [PR 65].