Version 2.7 of the through hole version, squashed merge for cleanliness.

Version 2.7 of the through hole version, squashed merge for cleanliness. Notable changes

redistrbution of components for centrally places LEDS
dual resistors on the top half of the voltage divider (for precise division)
moved LED2 out of the circuit that effects the overvoltage detection to allow for any value of R for the LED without affecting the MOSFET's saturation

bwack / C64-Saver-bwack