Updated changelog

Author: s1hofmann

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## 1.2.1
+
+- Enhancement: Exported `Button` enum [(#75)](https://github.com/nut-tree/nut.js/issues/75)
+
 ## 1.2.0
 
 - Bugfix: Drag & drop gestures were not working on macOS and Windows [(#70)](https://github.com/nut-tree/nut.js/issues/70)