Adding zip diff if available for fzz files
Adding bar drawing for graphing sensor data.
Swapping in new bar drawing code.
Using typed vars instead of defines for constants.
Initialise LCD chars for bar graphs
Move function calls outside of min() & max()

as per warning on http://arduino.cc/en/Reference/max
rearranging display for 2 line LCD.

Still needs testing on 4-line displays.