Tool for controlling multiple sd-mux devices

 sd-mux stands for Secure Digital Multiplexer. This is SD card switcher
 (multiplexer) designed to help automatic testing.
 .
 The software is designed to work with Tizen's SD MUX [0], but it is also
 compatible with SDWire [1], which is now recommended over the former.
 .
 [0] <https://wiki.tizen.org/SD_MUX>
 [1] <https://wiki.tizen.org/SDWire>
 .
 This tool allows one to:
  - Connect SD card to DUT (Device Under Test) or to TS (Test Server)
  - Connect one USB port to DUT or TS
  - Power off or on DUT
  - Reset DUT through power disconnecting and reconnecting