docs: update unreleased changelog section

CHANGELOG.md

@@ -4,17 +4,18 @@ 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]
+## [0.4.0] - 2021-09-04
 
 ### Added
-- Task sorting & filtering
-- Redesigned the Task Details UI
-- Implement task group actions (duplicate/delete all tasks/sort)
+- Project visibility can now be set to public - meaning anyone can view the project board
+- When redirected to login page while trying to view a page that requires login, you'll be redirected back to the correct page after login
+- When creating a new label within the LabelManager on a card, the new label will automatically be applied to the task after creation
+
+### Changed
+- Switch primary font to Open Sans
 
 ### Fixed
-- removed CORS middleware to fix security issue
-- Added 3 retries with backoff to initial database connection [(#47)](https://github.com/JordanKnott/taskcafe/issues/47)
-- Can now actually set a due date
+- Any open popups are hidden when closing the Task Details window
 
 ## [0.1.1] - 2020-08-21