RPIO v0.10.0

  * Auto-cleanup on exit (also shuts down ``wait_for_interrupts(threaded=True)``)
  * Bugfix in cpuinfo.c: correctly trim over-voltage header
  * rpio-curses: help shows raspberry sysinfo
  * switched argument ordering of wait_for_interrupts to (``wait_for_interrupts(threaded=False, epoll_timeout=1)``)
  * Added ``RPIO.Exceptions``