Use rune length over byte length when formatting.

Resolves #27

Author: drn

format/compact.go

@@ -28,7 +28,7 @@ func compactDisplay(nodes []node.Node, width int, options map[string]interface{}
 	// determine max node length
 	maxLength := 0
 	for _, node := range nodes {
-		length := len(node.Name)
+		length := len([]rune(node.Name))
 		if maxLength < length {
 			maxLength = length
 		}
@@ -65,7 +65,7 @@ func compactDisplay(nodes []node.Node, width int, options map[string]interface{}
 			// print right padding
 			fmt.Printf(
 				"  %s",
-				strings.Repeat(" ", maxLength-len(node.Name)),
+				strings.Repeat(" ", maxLength-len([]rune(node.Name))),
 			)
 		}
 	}

format/long.go

@@ -28,7 +28,7 @@ func Long(nodes []node.Node, options map[string]interface{}) {
 	for i := range values {
 		lengths[i] = make([]int, len(values[i]))
 		for j := range values[i] {
-			length := len(util.StripColor(values[i][j]))
+			length := len([]rune(util.StripColor(values[i][j])))
 			lengths[i][j] = length
 			if length > maxLengths[j] {
 				maxLengths[j] = length