Screen boundaries are off with box command

[randy-earthlcd]

Describe the bug
The screen start and end coordinates are off in the box command. Possibly LCD timing is wrong.

To Reproduce

1. Run this command:
   ez.Cls(0)
   -- These are outer pixels of the screen, [0,319] and [0,239] but shows a red line on top only
   ez.Box (0,0,319,239,0xff0000) -- draw a red box

By trial and error this draws a red box filling the outer displayable pixels from 1,0 to 318, 238

ez.Cls(0xFFFFFF)
ez.Box (1,0,318,238,0xff0000) --These are outer pixels of the screen, shouldn't they be [0,319] and [0,239]?

Expected behavior
Randall the intern tried to draw a box the size of the screen and it was off center so by trial and error he found what he had to do to draw a one pixel thick box on the perimeter of the screen.