Set release date

Update screenshots in README.

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
-## 1.6.0 Beta 1817 (2019-04-28)
+## 1.6.0 (2019-05-01)
 
 ### Added
 

README.md

@@ -3,7 +3,7 @@
 # [Passepartout][about-website]
 
 ![iOS 11+](https://img.shields.io/badge/ios-11+-green.svg)
-[![TunnelKit 1.6.x](https://img.shields.io/badge/tunnelkit-1.6-d69c68.svg)][dep-tunnelkit]
+[![TunnelKit 1.7.x](https://img.shields.io/badge/tunnelkit-1.7-d69c68.svg)][dep-tunnelkit]
 [![License GPLv3](https://img.shields.io/badge/license-GPLv3-lightgray.svg)](LICENSE)
 [![Join Reddit](https://img.shields.io/badge/discuss-Reddit-orange.svg)][about-reddit]
 [![Join Telegram](https://img.shields.io/badge/chat-Telegram-blue.svg)][about-telegram]