Update changelog for 1.6.1

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

CHANGELOG.md

@@ -1,6 +1,10 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## 1.6.1 – 2018-08-02
+### Fixed
+- Server provider registration updates when using multiple u2f devices
+
 ## 1.6.0 – 2018-08-02
 
 ### Added