Update changelog

Author: mfn

CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
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 ### Added
 - Model hooks for adding custom information from external sources to model classes through the ModelsCommand [\#945 / wimski](https://github.com/barryvdh/laravel-ide-helper/pull/945)
+- Added `post_discover` hook to run commands after package discovery [\#1185 / netpok](https://github.com/barryvdh/laravel-ide-helper/pull/1185)
 
 ### Fixed
 - Fix ide-helper:models exception if model doesn't have factory [\#1196 / ahmed-aliraqi](https://github.com/barryvdh/laravel-ide-helper/pull/1196)