o Add LCD display.
o Move out LCD in seprate file.
o Move out SerialCom class, provide a clean interface in serial-com.h
o Make reading robust (we're not fast enough for polling): fill an incoming
  buffer of 64 bytes with incoming data (in particular needed for the LCD
  writing which can be quite some data).
Merge branch 'master' of github.com:hzeller/rfid-access-control