Flatpak package

Flatpak packages are nice for users as they are more transparent than appimages in the sense that are integrated in package managers (easy to install/uninstall and regular check for updates), and typically flatpak packages are more system aware (look and feel, global menu, colortheme, etc.).

I agree with you. I refer you to this. As soon as electron builder supports it I will compile it.
Thank you for the interest in my project :)