Silc Lizard (Tokage) Renew

Can this function be applied to rotations as well? I was thinking of something similar in #63662. I prefer that those transformations need to be PreProcess for retargeting.

If there is a better name for this option, the change is fully acceptable :) I respect the decision of the maintainer.

Rebased for resolving conflicts. Discussion in Contributors Chat with ellenhp: > ellenhp 2021/12/4 AM1:06(JST) I didn't intend to block the PR. Quite the opposite. I was just trying to say...

Need to add to some methods in `AnimationTrackEditor`; superseded by #56902.

I managed this in #56902, but reduz is not that positive about retargeting at least for 4.0, so I don't know if it will be merged by 4.0 or not....

Salvaged and rebased.

I'm reconsidering; I think the original purpose of the volume being adjusted by BlendTree was because the volume needed to be log interpolated rather than linearly interpolated. So, I think...

@ellenhp The blend animation blends the values linearly between each track, except with respect to the volume of the AudioPlaybackTrack, which implicitly overrides the volume of the AudioStreamPlayer. You can...

@ellenhp Ah yes, RMS and db are completely different values. I was confusing them and commenting on them, sorry. BTW, if AudioStreamPlayer's volume is on a logarithmic scale, then there...

@ellenhp Here is a sample project. [audio_track_test.zip](https://github.com/godotengine/godot/files/8558521/audio_track_test.zip) --- First, currently AudioPlaybackTrack implicitly changes the volume when blending. (The video has sound, if the video is muted, unmute it.) https://user-images.githubusercontent.com/61938263/165187070-5e8d45de-45d8-4adf-af79-98b7a8501d49.mov Make...