Add Volume Waveform to Timeline #773
Draft
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It's still a proof of concept.
I've added a button to TimelineControls.cs, it's using Icon.Stripe4PxPattern

Click this button to switch between Spectrum, Waveform or Both.
I have the feeling that generating the image is too slow compared to generating only the original spectrum.
Maybe some optimisation can be done.
I've tried to find colors that will look okay in any of the default color themes.