New MINOR release 03.03.00

Changes since 03.02.02:

- reduce IRQ load by changing power feedback loop frequency from 100 kHz
  to 1 kHz. NOTE: This alters the step size used for ramping up/down the
  current also by a factor 100!
- attempt to fix DHCP issues: disable fallback to hard-coded static IP
  and instead reboot the LDD if DHCP did not succeed within a certain
  timeout.