Release v2.1.3

Lino Sanfilippo (5):
      piControl: add padding bytes to picontrol_firmware_upload struct
      Fix typo in manpage
      piControl: set return value to 1 if firmware is already up to update
      piControl: rename element in picontrol_firmware_upload struct
      piControl: for firmware upload perform sanity checks as early as possible

Thomas Böhler (3):
      Return info for address 0 with KB_GET_DEVICE_INFO
      Use picontrol_write_device_info to avoid duplicated code
      Release piControl v2.1.3