Update changelog for v1.0.1

Author: darkriszty

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to the `markdowntableprettify` extension will be documented
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+
+## 1.0.1 - 2017-04-08
 - Fixed issue #1 by improving the detection of header separator to avoid unintended table formatting failures.
 
 ## 1.0.0 - 2017-04-03