Feature: parameter interpolation timeline

[brylie]

It would be useful if parameter values could be set along a timeline with interpolation between values. E.g. an opacity value could start at 0 and interpolate to 0.77 over a one second span.

Use case(s)

Editors might want to display some visual elements at specific segments in an audio file, rather than through the entire recording. E.g. a song title might display for the first few seconds and fade away.

Prior art

See the Blender dopesheet.