Release 4.0.0 (#339)

Bump to 4.0.0, closes #336

Author: ukd1

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
+## [4.0.0] - 2022-05-17
+
+Updates:
+- [Allow overriding of job successes](https://github.com/QueueClassic/queue_classic/pull/338)
+- [Move to @github actions - @circleci ended up being slower. Test for Ruby 2.6, 2.7, 3.0 and 3.1. Require a more modern, but still old PG gem.](https://github.com/QueueClassic/queue_classic/pull/335)
+- [Setup some code analysis](https://github.com/QueueClassic/queue_classic/pull/337)
+
 ## [4.0.0-alpha1] - 2019-07-18
 
 Updates:

lib/queue_classic/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module QC
-  VERSION = "4.0.0-beta1"
+  VERSION = "4.0.0"
 end