Update CHANGELOG

Author: stijnh

CHANGELOG.md

@@ -5,11 +5,17 @@ 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).
 
 ## [Unreleased]
+### Added
+### Changed
+### Removed
+### Fixed
+
+## [1.0.0] - 2022-02-17
 
 ### Changed
 
-- Complete rewrite of litstudy project.
-- Rename from "automated-literature-analysis" to "litstudy"
+- Complete rewrite of litstudy project for 1.0 release.
+- Rename from "automated-literature-analysis" to "litstudy".
 
 ## [0.0.1] - 2019-09-04