Continuous Integration
I have the feeling Travis CI is not performing checks anymore upon PR, due to https://github.com/robinweide/GENOVA/issues/252#issuecomment-776693792 @robinweide can you check if Travis still performs checks? (I can only find my own dashboard) If Travis doesn't check anymore, we might consider migrating the CI to GHA as I think I read somewhere that Travis was going to charge money after some amount of CPU hours.
Yes, it gave a build-error. You can click on the badge in the readme to check :)

Strange, I'm used to it giving the check results when having opened a PR, but I couldn't see it this time.
I'm still not entirely confident that CI works as intended, see https://github.com/robinweide/GENOVA/pull/270#issuecomment-872017507