* usr/lib/byobu/network: LP: #1203601
  - fix issue where /proc/net/dev isn't read correctly; use an
    intermediate cache file
* usr/lib/byobu/cpu_temp: LP: #1167176
  - reorder cpu temp detection, as the previous order seemed to
    pick up GPU temps before CPU temps
* usr/share/byobu/keybindings/f-keys.screen.disable:
  - drop a couple of keys that don't exist; should fix F5 refresh
    errors in byobu-screen, partial fix for LP: #814172
releasing 5.56
opening 5.57