Update c3.js and c3.min.js

c3.js

@@ -7952,6 +7952,22 @@
             };
         }
     };
+    c3_chart_fn.axisX = function (value){
+        var $$ = this.internal;
+        
+        $$.config.axis_x_show = !!value;
+        $$.axes.x.style("visibility", $$.config.axis_x_show ? 'visible' : 'hidden');
+        
+        $$.redraw();
+    };
+    c3_chart_fn.axisY = function (value){
+        var $$ = this.internal;
+        
+        $$.config.axis_y_show = !!value;
+        $$.axes.y.style("visibility", $$.config.axis_y_show ? 'visible' : 'hidden');
+        
+        $$.redraw();
+    };
 
     c3_chart_fn.legend = function () {};
     c3_chart_fn.legend.show = function (targetIds) {