  * package javascript library bootstrap-slider
    to support option spatial_audio with plugin audiobridge
    (or maybe use already packaged nouislider instead)
  * package javascript library mediapipe
    and stop exclude virtualbg demo
    <https://github.com/google/mediapipe>
  * package and use javascript library bootswatch v5
  * package and link against RNNoise
    <https://bugs.debian.org/980839>
