Merge branch 'soapbox-3.0' into 'develop'

Prepare for v3.0.0

See merge request soapbox-pub/soapbox!2037

CHANGELOG.md

@@ -4,7 +4,7 @@ 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]
+## [3.0.0] - 2022-12-25
 ### Added
 - Editing: ability to edit posts and view edit history (on Rebased, Pleroma, and Mastodon).
 - Events: ability to create, view, and comment on Events (on Rebased).