v0.8.0

✨ Added

• An Oscilloscope module: the waveform itself, in a lane per channel. Its
  one control is a time base, from 5 ms to 5 s, and it sets both how much time
  the width holds and how the window is found — below 200 ms the display is
  triggered on a rising zero crossing, so a periodic signal stands still and
  can be read, and above it the display rolls right to left the way a DAW
  draws a waveform. Anything that reached full scale is drawn in the over
  colour, so a clipped passage is a red band rather than a flat top somebody
  has to notice. It measures nothing the previous thirteen modules did not:
  the samples were already published, and it works on a tablet unchanged.
• The oscilloscope leaves a gap where audio was measured and never published —
  a file pushed through faster than real time, or a device that overran. The
  alternative is drawing the samples that happen to be at hand across the
  whole stretch, which is a picture of a programme that never played, at the
  right amplitude and in the right place.

⚡ Changed

• The default layout's Spectrum tab carries the oscilloscope across its full
  width. The analyser and the three displays below it are a row shorter each
  to make room. A layout you have already arranged is untouched — the canvas
  as you left it is what reopens.

🚧 Internal

• The meter clock now acquires the engine's snapshot on every tick and throttles
  only the repaint. The frame-rate setting still does what it says — at 30 fps
  the meters rasterise thirty times a second — but a measurement is no longer
  lost between two of them. The engine's snapshot has one slot, so anything a
  reader does not take before the next publish is gone; that cost the old
  arrangement one measurement in three at 30 fps against a 47 Hz publish rate.
  The oscilloscope is the first module for which that is a hole rather than a
  coarser picture, and it reads the new unthrottled channel.