Nested labels can use more space in inverted chart

[xyzisinus]

First, many thanks for sharing this very handy tool! However, I found the labels at different nesting levels are a bit too cozy together in an inverted chart. See image below (ignore the button please):

http://postimg.org/image/ersnz0gc1/

With the following change:

     // set level size
-    axis.groupSize(depth, tick.label.getBBox()[size]);
+    var somePadding = 0;
+    if (size === 'width') {
+      // space out a bit for inverted chart (with categories
+      // at the side) to fit nested category labels better
+      somePadding = 10;
+    }
+    axis.groupSize(depth, tick.label.getBBox()[size] + somePadding);
 

The rendering is better spaced (see image below). Since I suspect this is not the right fix it I'll leave it to the experts, instead of submitting a pull request. Thank you again!

http://postimg.org/image/e0zxt8dyp/