chore: update changelog

CHANGELOG.md

@@ -3,8 +3,19 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [3.8.4] - 2021-05-27
+
 ### Fixed
-- Sync passthru methods [#2194](https://github.com/jenssegers/laravel-mongodb/pull/2194) by [@simonschaufi](https://github.com/simonschaufi)
+- Fix getRelationQuery breaking changes [#2263](https://github.com/jenssegers/laravel-mongodb/pull/2263) by [@divine](https://github.com/divine)
+- Apply fixes produced by php-cs-fixer [#2250](https://github.com/jenssegers/laravel-mongodb/pull/2250) by [@divine](https://github.com/divine)
+
+### Changed
+- Add doesntExist to passthru [#2194](https://github.com/jenssegers/laravel-mongodb/pull/2194) by [@simonschaufi](https://github.com/simonschaufi)
+- Add Model query whereDate support [#2251](https://github.com/jenssegers/laravel-mongodb/pull/2251) by [@yexk](https://github.com/yexk)
+- Add transaction free deleteAndRelease() method [#2229](https://github.com/jenssegers/laravel-mongodb/pull/2229) by [@sodoardi](https://github.com/sodoardi)
+- Add setDatabase to Jenssegers\Mongodb\Connection [#2236](https://github.com/jenssegers/laravel-mongodb/pull/2236) by [@ThomasWestrelin](https://github.com/ThomasWestrelin)
+- Check dates against DateTimeInterface instead of DateTime [#2239](https://github.com/jenssegers/laravel-mongodb/pull/2239) by [@jeromegamez](https://github.com/jeromegamez)
+- Move from psr-0 to psr-4 [#2247](https://github.com/jenssegers/laravel-mongodb/pull/2247) by [@divine](https://github.com/divine)
 
 ## [3.8.3] - 2021-02-21
 
@@ -28,4 +39,4 @@ All notable changes to this project will be documented in this file.
 ## [3.8.0] - 2020-09-03
 
 ### Added
-- Laravel 8 support & updated versions of all dependencies [#2108](https://github.com/jenssegers/laravel-mongodb/pull/2108) by [@divine](https://github.com/divine).
+- Laravel 8 support & updated versions of all dependencies [#2108](https://github.com/jenssegers/laravel-mongodb/pull/2108) by [@divine](https://github.com/divine).