Fix problem with tuning axis

src/axis.js

@@ -587,7 +587,6 @@ c3_chart_internal_fn.findMinMax = function () {
     var i,j, id;
 
     var allData = $$.api.data();
-
     allData.forEach(function(v){
         var data;
         if(v){
@@ -637,9 +636,12 @@ c3_chart_internal_fn.findMinMax = function () {
                     for(var k = 0; k < tmp.length; k++){
                         s += tmp[k][j].value;
                     }
-                    if (isUndefined(maxY) || s > maxY)
-                    if (isUndefined(minY) || s < minY)
+                    if (isUndefined(maxY) || s > maxY){
+                        maxY = s;
+                    }
+                    if (isUndefined(minY) || s < minY){
                         minY = s;
+                    }
                 }
             }
         } else {

src/data.load.js

@@ -27,6 +27,8 @@ c3_chart_internal_fn.load = function (targets, args) {
     // Set targets
     $$.updateTargets($$.data.targets);
 
+
+    $$.tuneAxis();
     // Redraw with new targets
     $$.redraw({withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true});