Update CHANGELOG for version 0.4.2

Fix Twig extension registration when using Symfony Mercure 0.7 (#108)

* Fix Twig extension registration when using Symfony Mercure 0.7

* phpstan

* fix

Update changelog

Changelog for 0.3.9

Version 0.3.8

Version 0.3.7

docs: changelog for version 0.3.6 (#77)

* Use the right argument index for `Authorization` cookie lifetime

Version 0.3.4

Version 0.3.3