Release checklist

[ndarilek]

What has to happen in order for this to get officially released?

I'd hoped to use Nakama for leaderboards and other services in my game, and even began building a Bevy plugin. But it still uses the old bindings, and I abandoned work because API coverage was incomplete at that time.

Things seem better now, but there hasn't been any movement since my last PR.

A list of missing features would be useful for contributors to help out. I don't know enough about Nakama, or about this API, to know what might still be missing. But I'd be willing to help if I knew how much work it'd be, and if the remaining amount wasn't absolutely massive.

Thanks.