nerd-deck firmware 0.9.0

What's changed

Everything since firmware-v0.8.1.

Fixes

• firmware: stay responsive when data floods in (d7eac3c)
  Serial is read in chunks for at most 20 ms a pass, so a sender going flat
  out can't freeze the screen, and only the newest whole stats each pass are
  drawn. A line that starts like a message counts as the host being there,
  even when a flood has dropped bytes from the rest of it.
• wait for the stats interval before taking the host for gone (703bcdf)
  The app sends its stats interval with the display settings, and the deck
  waits that long plus 2 s, at least 3 s, before showing the waiting screen,
  so a 5 s interval no longer drops to it between updates.

Documentation

• the stats interval timeout ships in firmware 0.9.0 (04684e7)

Chores

• release: firmware 0.9.0 (e6f1f8d)

Full diff: firmware-v0.8.1...firmware-v0.9.0