New mouth physics and subscription changes

I'm almost done working on the mouth physics. It's not the final version yet, but it looks pretty good.
A small demo with one scene from the new project will be released soon, so stay tuned for updates.

In three days, I will close Senator Tier subscriptions for new users. If you are already subscribed, nothing will change for you, and in the future, you will even receive more bonuses than you do now. Only the Noble and Dictator (I will rename later) tiers will be available to new users. Senator Tier is not popular and confuses new users.

Thank you for your support, and I love you all💌