This includes all changes from

  4c660b46c11f8a84941194f60e4f48e57b0a86b7
  Makefile.am: Add missing src/serial_hid.h.

up to

  39ea7b7d390c4f1d4a697a40769ce364de9c97d0
  dmm/eev121gw: add missing scale items for sub display in power modes

This is possible since none of the changes above change or
remove public API calls of the library.