Log Message:
Update to 2.4.1

gphoto2 2.4.1

    * Made capture preview that saves to files work
    * capture-image has no arguments
    * version check for libgphoto2 fixed
    * cs,da,it,vi translations updated

gphoto2 2.4.0

    * Add contrib/ directory with scripts and things contributed by users.
    * New --storage-info function to get direct storage information from the
      camera via API.
    * Use SIGUSR1 to trigger premature image capture in --interval mode.
    * New --reset-interval parameter makes SIGUSR1 reset the capture
    interval.
    * New --capture-tethered command to wait for presses of the camera
    shutter button and download. Confirmed working only with Nikon DSC.