Bump to v3.6.0.

internal/arraySum.js

@@ -0,0 +1,21 @@
+define([], function() {
+
+  /**
+   * A specialized version of `_.sum` for arrays without support for iteratees.
+   *
+   * @private
+   * @param {Array} array The array to iterate over.
+   * @returns {number} Returns the sum.
+   */
+  function arraySum(array) {
+    var length = array.length,
+        result = 0;
+
+    while (length--) {
+      result += +array[length] || 0;
+    }
+    return result;
+  }
+
+  return arraySum;
+});