Increase size of edge connector footprint holes

[derekfountain]

The main reason the board doesn't lie lower than it does is the way the 90degree edge connector connects to it. The pins of the connector go through the holes, but only by a couple of mm because the holes are quite small and the pins are tapered.

If I replace the holes on that connector footprint with some slightly larger ones the connector pins will press through further and the board will sit higher.