Update changelog

Author: barryvdh

CHANGELOG.md

@@ -5,7 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## 1.0
+## 1.1-dev (Unreleased)
+
+### Added
+ - setOptions() method to overwrite or set the options later.
+
+## 1.0.0 (2020-02-19)
 
 ### Changed since split from asm89/stack-cors