Moved font loading external to Draw call. Should improve performance.

geometry/grid.go

@@ -96,7 +96,6 @@ func BuildGrid(numRows int, numColumns int) {
 
 	//assign random colours to a subset of all squares
 	squaresToColour := min(numColumns, numRows)
-
 	usedPositions := make([]Pair, squaresToColour)
 	coloredSoFar := 0
 	for i := 0; i < squaresToColour; i++ {