Publish on Flathub

[teackot]

Can I publish your app on Flathub (an app store for Linux)? I am already working on it in my repo, (almost) everything is ready

This will make the installation process faster and more convenient (i.e. a single click in the software centre) and may help people discover Catapult (and Cataclysm!)

Also sandboxing protects system from potential data corrupting bugs (you never know): the app can only access the ~/.catapult/ directory.

Only a small change is required. Catapult needs to be able to store data separately from the executable. I am working on it in my Catapult fork. It's mostly ready too, only needs some message translations.