bump to v1.6.1. Fixed #23

Author: lxieyang

CHANGELOG.md

@@ -12,6 +12,10 @@ All notable changes to this project will be documented in this file.
 
 # v1.x (official releases)
 
+### [1.6.1](https://github.com/lxieyang/vertical-tabs-chrome-extension/releases/tag/v1.6.1) (2020-01-19)
+
+- Fixed [#23](https://github.com/lxieyang/vertical-tabs-chrome-extension/issues/23) by removing `iframe-background.gif` after load.
+
 ### [1.6.0](https://github.com/lxieyang/vertical-tabs-chrome-extension/releases/tag/v1.6.0) (2020-01-06)
 
 - **Mute** tabs with a single click.