If the itch.io and F-Droid APKs are identical, how should we determine whether or not Mitch should update itself via itch? Or do we ask the user? Or does this not matter and we should always use itch.io even if the initial install was done from the F-Droid client/website/third-party clients? Leaning toward the latter as it will ensure the quickest updates while leaving F-Droid updates as a fallback.