Allow setting versions to "new-games" / "savegames-only" if you like to #31
Description
Currently the latest upload is always "new-games", and anything else is "savegames-only". This is not technically required by anything, it was just easier to implement.
Please create an additional to the API that allows to set any version to "new-games" and "savegames-only". Possibly it would be good if two versions are "new-games" it is enforced that their min/max compatability-versions don't overlap (as that would make no sense).