Renoir's RepRap Single-Sided Stepper Driver board v2.3

This is a single-sided version of the makerbot stepper driver board v2.3
http://www.thingiverse.com/thing:393

I tweaked the board to make it easier to etch and make at home. The vias are not underneath components, simple wire links can replace the tracks on one side of the board, and the track sizes tweaked a bit.
It can still be improved.