This is likely the biggest update yet. Thanks to the development around CalyxOS I could migrate and solve two of the most annoying issues (#6, #11).
No more --force-queryable
This release does no longer need advanced installation methods. Just install the apk like any other.
Working preview button
The preview button is finally working thanks to the Calyx developers. Gcam Services Provider always was a lightweight application and my implementation of the button follows that idea. The photo will be opened in your default gallery app.
How to update
First of all, you should only update if your default gallery app is not Google Photos.
From now on there will be two APKs. One with the preview button implementation (called "photos") and one without (called "basic"). The easiest way is to uninstall your current version and then to install "photos" when you don't have the Google Photos app on your device and otherwise install "basic".