I recently checked whether any of my github PRs had been merged, and I found many of them to be, but it seems like I was not credited in any of Unreal Engine release notes. The following changes were merged in 5.1, 5.2 and 5.3:
https://github.com/EpicGames/UnrealEngine/pull/9004
https://github.com/EpicGames/UnrealEngine/pull/9223
https://github.com/EpicGames/UnrealEngine/pull/9221
https://github.com/EpicGames/UnrealEngine/pull/9218
https://github.com/EpicGames/UnrealEngine/pull/8726
https://github.com/EpicGames/UnrealEngine/pull/8794
https://github.com/EpicGames/UnrealEngine/pull/9219
It would be nice to get credited 
. You can credit them to Pumbo (Filippo Tarpini)