Changelog update for release

Author: stack

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
-## [Unreleased]
+## 2.0.0 - 2019-09-12
 ### Added
 -   `AutoVacuum` dictates the automatic vacuuming mode.
 -   `JournalMode` dictates the journaling mode used by the database.