Bump to 2.1.0. Update changlog

Author: devblackops

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [2.1.0] - 2020-05-15
+
+### Changed
+
+- Bumped PSScriptAnalyzer to `1.18.3` (via [@alagoutte](https://github.com/alagoutte))
+
 ## [2.0.0] - 2019-08-28
 
 ### Changed
@@ -49,4 +55,4 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
-- Initial release using PSScriptAnalyzer version `1.17.1`
+- Initial release using PSScriptAnalyzer version `1.17.1`