v6.1.0

• Change the borderStyle option in a backwards-compatible way (#69) ee66420
  While not required, we encourage you to move to this new format:

 {
 	topLeft: '+',
 	topRight: '+',
 	bottomLeft: '+',
 	bottomRight: '+',
-	horizontal: '-',
-	vertical: '|',
+	top: '-',
+	bottom: '-',
+	left: '|',
+	right: '|',
 }

v6.0.0...v6.1.0