Prepare for v0.1.0 release

Author: outdead

CHANGELOG.md

@@ -4,5 +4,9 @@ All notable changes to this project will be documented in this file.
 **ATTN**: This project uses [semantic versioning](http://semver.org/).
 
 ## [Unreleased]
+
+## v0.1.0 - 2020-10-22
 ### Added
 - Initial implementation.
+
+[Unreleased]: https://github.com/gorcon/websocket/compare/v0.1.0...HEAD