I use a release by Pitbull that works fairly well. The bugs currently are no 4k or 60fps video recording, no video at all on wide lens (without clearing cache first), but no bugs I've found in selfies, portrait mode, or night sight mode. If you toggle the 4k button in the pulldown, the app will crash and no longer open causing you to clear data in storage and perform setup again, same with choosing Camera 3. Latest release does have support for configs though. In settings, sabre has to always be off. If it's on, all photos will crash. Also the option "disable openGL preview" needs to be toggled on to allow night sight to work properly under fixes.
In the screenshots, I circled the important settings. The first one is in main settings screen, the second is under fix settings screen. With these settings, and not choosing 4k or camera 3, app works great, especially photos. If you like gcam for pictures, you will like this one.