accept typed array as inner arrays in multicategory autotype

Author: etpinard

src/plots/cartesian/axis_autotype.js

@@ -89,5 +89,5 @@ function category(a) {
 // trace modules that should never auto-type to multicategory
 // should be declared with 'noMultiCategory'
 function multiCategory(a) {
-    return Array.isArray(a[0]) && Array.isArray(a[1]);
+    return Lib.isArrayOrTypedArray(a[0]) && Lib.isArrayOrTypedArray(a[1]);
 }

test/jasmine/tests/axes_test.js

@@ -293,6 +293,18 @@ describe('Test axes', function() {
                 });
                 checkTypes('multicategory', 'multicategory');
 
+                supplyWithTrace({
+                    x: [
+                        new Float32Array([2018, 2018, 2017, 2017]),
+                        [2018, 2018, 2017, 2017]
+                    ],
+                    y: [
+                        [2018, 2018, 2017, 2017],
+                        new Float64Array([2018, 2018, 2017, 2017])
+                    ]
+                });
+                checkTypes('multicategory', 'multicategory');
+
                 supplyWithTrace({
                     x: [
                         [2018, 2018, 2017, 2017]