I'm in the habit of using Git for everything and including an open source license with all of my projects I'm not intending to sell. This leaves me with 2 questions:

• Can I include a Git repository with the project files? Or should I remove it before uploading the project files? For clarity, I don't intend to add any extra information to the Git history, beyond the exact changes that I make.
• Can I include an open source license with the game files? I am not a lawyer, but it seems to me that adding a license is a net addition to rights, as it possibly allows for more rights compared to what itch.io allows. I'd prefer to use a GPL3 license, but I'm willing to use Mit or Apache as well if that is more preferred.

I'm not even sure if I can even make enough time to join, although I'm going to try my best to join day 1 at least. Anyway I'm looking forward to the jam if I manage to join!