Release 0.7 changelog:
- implemented the ability to log to syslog.
- ignore joystick devices when searching for USB devices (linux).
- added code to attempt to wrestle devices from the X server.
- added the new 3Dconnexion vendor id to the device matching logic.
- made builds reproducible by linking in alphabetical order.
- added option led = auto, to turn the LED on only when a client connects (linux).
- implemented a blacklist of USB device ids that should be ignored.